Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
hieu sach » hieu cach, dien sach, hieu cac
hang cong » dang cong, hang nong, bang cong
tam hang » nam thang, pham hang, tam huong
cong tan » cong tac, cong san, cong thanh
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sach) OR (chieu sach)) - thanh trung tam hang cong tan ((than cap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sach) OR (chieu sach)) - thanh trung tam hang cong tan ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu sach) OR (chieu sach)) - thanh trung tam hang cong tan ((than cap) or (khan cap))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sach) OR (chieu sach)) - thanh trung tam hang cong tan ((than cap) or (khan cap))*.