Search engine not working properly
 

hi to all
i m a new to v bulletin my problem is i am running a forum where if i search single word then search result coming perfect, but if i search two words combination then i m not getting proper (messy) result,

in more detail means if i search two words combination (Orange Mango) then i need result of those post and thread which having these two word combination not the separate separate words (which i m getting right now).

i hope i clearly mention my problem.

i need help, what can i do