Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung pham » trung phan, tung pham, trung phat
hieu sach » hieu cach, dien sach, hieu cac
pham hang » pham hoang, pham hong, pham hanh
hang cong » dang cong, hang nong, bang cong
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh 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 pham hang cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sach) OR (chieu sach)) - thanh trung pham hang cong san than cap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sach) or (chieu sach)) - thanh trung pham hang cong san than cap*.