Whats the default search query(FreeText or Contains) for sharepoint?

I think based on the search keyword it call the query.

Contians:"sharepoint" FreeText:"sharepoint configuration" WildCard: "shar*"

Contains:When it will will go to contains search?

FreeText:When it will move to freetext search. How it i开发者_StackOverflowdentify to call the freetext query.

WildCard Search:how its idenfify to include the wild card.

The web front end uses keyword search. I would use the SharePointSearchService tool for information on using the webservice.