Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
nang ma » tang ma, sang ma, nang cao
van lam » van nam
truc va » thuc va, thuc vat, trung va
vai cua » dai cua, hai cua, lai cua
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ky nang ma hoi. hieu van lam ((xuc va) or (truc va)) thanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky nang ma hoi. hieu van lam ((xuc va) OR (truc va)) thanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: su xac ky nang ma hoi. hieu van lam ((xuc va) or (truc va)) thanh vai cua triet*.