Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
hieu van » hieu va, thien van, lieu va
hanh cao » hanh cac, hanh cat, hanh cad
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
van cam » van nam, van lam, van cau
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » tuc va, luc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ma hoi. hieu van cam ((xuc va) or (duc va)) hanh cao chat triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu van cam ((xuc va) OR (duc va)) hanh cao chat triet.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu van cam ((xuc va) or (duc va)) hanh cao chat triet*.