Hi, Svetlana,
Some questions:
1) Can you verify that you have enabled full-text search in
your help project?
2) What is the language of your help project, and the default
system language of the computer on which you're compiling it?
Problems can arise when compiling help files in some non-Western
European languages. See this page for details:
http://helpware.net/FAR/far_faq.htm#JapComp
3) Does the search feature work in other help files on your
computer?
4) What error messages do you get when searching?
5) Are you using a full-text search "stop list" to prevent
the compiler from including commonly occurring words in the search
index?
Pete