Dorks :-
inurl:search.php?
inurl:find.php?
inurl:search.html
inurl:find.html
inurl:search.aspx
inurl:find.aspx
inurl:".php?cmd="
inurl:".php?z="
inurl:".php?q="
inurl:".php?search="
inurl:".php?query="
inurl:".php?searchstring="
inurl:".php?keyword="
inurl:".php?file="...