This system will take words string keywords as a phrase. For example, network engineer, engineer network, are totally different phrases . So when you input the keywords network engineer, will cause a different search result with the keywords engineer network .

For example, if you want to find the documents containing the words "network" and "engineer", then you can input the keywords with either network&engineer, or engineer&network. And the results are the same with keywords network&engineer, engineer&network.

"|" represents OR. For example, if you want to search the documents containing the words "network" or "engineer", then you can input the keywords with either network|engineer, or engineer|network. And the results are the same with keywords network|engineer, engineer|network.

"!" represents NOT. For example, if you want to search the documents containing the word of "Tornado" , but without the keyword "engineer", then you can input the keywords with either network|engineer, or engineer|network.

"~" represents NEAR. If you input the keyword with Tornado~Technology, the system will search the documents which contain the keywords Tornado and Technology and two keywords in the same paragraph.

You can use the parentheses symbol "(" , ")" , to have the query keywords' logic like a mathematical expression , For example, If you want to search documents which contain the keywords Tornado, Software , but not about the movie or atmosphere. Then You can input the keywords (Tornado&Software)!movie!atmosphere .

If you want to search the documents which contains a phrase with chinese,english,or symbol characters, then it's better to double-quot the phrase. For example, "C++", ".NET", "norton anti-virus"

You can use the file name , author , .. , to filt the search result. For example, user search with keyword "network", and input the file name field with "technique life", then the documents containing the word "network" and it's file name containing "technique life" will be found out. Herein, not only file name can be used to filt, but also file date , file type, file size , author.

The English fuzzy search function allows the user to perform a highly open-ended and flexible search based on a rough meaning or text phrasing. Application for a fuzzy search is when the user employs an ambiguous meaning with the aim of retrieving a broad range of similar or related information with a single keyword search. If a regular precision search is performed, it is impossible to overcome the difficulties presented in these cases. For example : " electronic book " versus " e-book" , " electronic certificate " .

English words are formed from a combination of letters, and the user can take advantage of this fact to use wildcards to stand in for letters in their search text. "*" is used to stand for a string of more than one letter, while "?" represents a single letter. For example, entering the keyword "compu*" will retrieve "compulsion," "compulsive," "computable," "compute," "computer," and so forth. Entering the search text "compute?" will return "computer."

For Example, if you search with the keyword "aircraft" , then the documents containing airplane also can be found.