Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
thanh vi » hanh vi, thanh va, thanh ve
hieu van » hieu va, thien van, lieu va
dua ban » dia ban, cua ban, qua ban
van cau » van dau, van hau, van chat
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu
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 nang ma hoi. hieu van cau ((dua ban) or (duc va)) thanh vi ((cua te) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ma hoi. hieu van cau ((dua ban) OR (duc va)) thanh vi ((cua te) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ma hoi. hieu van cau ((dua ban) or (duc va)) thanh vi ((cua te) or (cau treo))*.