Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
cong tac » cong ty
hieu van » hieu va, thien van, lieu va
sach ky » sac ky, sach y, sach ty
anh vai » anh bai, anh van, anh tai
te sach » toc sach
lam xuc » cam xuc, lam duoc
van lam » van nam
tac hoi » tao hoi, tay hoi, tac hai
ky cong » ke cong, ly cong, khu cong
anh va » hanh va
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: te sach ky cong tac hoi. hieu van lam xuc va ((anh vai) or (anh va)) ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky cong tac hoi. hieu van lam xuc va ((anh vai) OR (anh va)) ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky cong tac hoi. hieu van lam xuc va ((anh vai) or (anh va)) ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky cong tac hoi. hieu van lam xuc va ((anh vai) or (anh va)) ((cua triet) OR (su triet))*.