Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
cau tren » cu tren, dau tren, ca tren
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
xuc ban » duc ban, cuc ban, quoc ban
cuu tre » cua tre, cau treo
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky sang ma hoi. hieu van cau xuc ban thanh vi ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky sang ma hoi. hieu van cau xuc ban thanh vi ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu cac ky sang ma hoi. hieu van cau xuc ban thanh vi ((cuu tre) or (cau tren))*.