Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
nhung cong » dung cong, thong cong, hang cong
chinh ca » chinh ta, chinh va, chinh tai
hinh cua » chinh cua, sinh cua, tinh cua
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran huu » tran duc

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - hanh ((chinh ca) OR (hinh cua)) nhung cong tac tran huu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chieu sang)) - hanh ((chinh ca) or (hinh cua)) nhung cong tac tran huu~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chieu sang)) - hanh ((chinh ca) or (hinh cua)) nhung cong tac tran huu*.