Perhaps you should try some spelling variations:
thien van » thi van
khu cong » thu cong, thi cong, cuu cong
cong tac » cong ty
lam duoc » nam duoc, luat duoc, lam thuoc
va triet » va thiet, va trien, ve triet
sac khu » cac khu, sac nhu, sach thu
tac hoi » tao hoi, tay hoi, tac hai
van lam » van nam
duoc va » nuoc va, duc va, duoc ma
anh tai » hanh tai, anh thai, vanh tai
te sac » te sach, te cac, te san
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 sac khu cong tac hoi. thien van lam duoc va ((anh tai) or (anh va)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac khu cong tac hoi. thien van lam duoc va ((anh tai) OR (anh va)) va triet.
• Adding a wildcard symbol may retrieve word variants: te sac khu cong tac hoi. thien van lam duoc va ((anh tai) or (anh va)) va triet*.