Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cua tre » cua te, cuu tre, cua triet
duc ban » duc tan, duc van, duc man
tai cua » thai cua, tai cuc, tri cua
dua ban » dia ban, cua ban, qua ban
hieu ve » hieu va, hieu van
ky tang » ky dang, kho tang, ky trong
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa
su sac » su sach, su cac, su xac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky tang) or (ky nang)) ma hoi. hieu ve cam ((duc ban) or (dua ban)) thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (ky nang)) ma hoi. hieu ve cam ((duc ban) OR (dua ban)) thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (ky nang)) ma hoi. hieu ve cam ((duc ban) or (dua ban)) thanh tai cua tre*.