Perhaps you should try some spelling variations:
cong tac » cong ty
hieu van » hieu va, thien van, lieu va
va triet » va thiet, va trien, ve triet
te sach » toc sach
sach ke » sach kem, sach de, sach che
ke cong » te cong, ve cong, khoe cong
tac hoi » tao hoi, tay hoi, tac hai
van lam » van nam
lam xuc » cam xuc, lam duoc
anh bai » sach bai, danh bat, hinh bai
xuc va » duc va, tuc va, luc va
anh va » hanh 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 ke cong tac hoi. hieu van lam xuc va ((anh bai) or (anh va)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ke cong tac hoi. hieu van lam xuc va ((anh bai) OR (anh va)) va triet.
• Adding a wildcard symbol may retrieve word variants: te sach ke cong tac hoi. hieu van lam xuc va ((anh bai) or (anh va)) va triet*.