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wild cards in search engine using jsp

1) Use Wildcards
eg: wh* will find the words what,why,when,whether and any other word that starts with wh.
eg: wh* are will find the phrases where are, what are, why are.

Wildcards may be combined with the standard plus(+) and minus(-) modifiers,quotes for phrases as well as the field search specifiers.

eg: +wh* -se*ch will find all pages which have a word that starts with wh and which doesn't contain a word that starts with se and ends with ch.

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2) check spelling
The search engine will have to find the words that sound similar to the search term. The search engine have to check the spelling of the search term.

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3) Use quotation marks
find the words that must appear adjacent to each other.
eg: "our pledge to you" have to find the words adjacent to each other but not the word our, pledge, to, you somewhere in someorder.

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4) Use plus(+) or minus (-)
plus(+) to indicate the desirable term in the search result.
minus(-) to indicate the undesirable term in the search result.


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