Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh hung » thanh huong, thanh tung, thanh trung
hieu lang » chieu sang, hieu quang, nhieu tang
bang cong » dang cong, bang song, hang cong
hung cua » huong cua, chung cua, khung cua
cua bang » chua bang, cua ban, cua dang
cong tac » cong ty
tac danh » sach danh, cac doanh, cac dan
danh cac » dinh cac, danh ca, hanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (hieu lang)) - thanh hung cua bang cong tac danh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (hieu lang)) - thanh hung cua bang cong tac danh cac.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (hieu lang)) - thanh hung cua bang cong tac danh cac*.