Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
chu sach » cau sach, thu sach, chieu sach
rau sach » cau sach, hau sach, khau sach
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
tran ban » tranh ban, tran van, toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu sach) or (rau sach)) - thanh trung cua nhung ((cong tan) OR (cong san)) tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sach) OR (rau sach)) - thanh trung cua nhung ((cong tan) OR (cong san)) tran ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu sach) or (rau sach)) - thanh trung cua nhung ((cong tan) OR (cong san)) tran ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chu sach) or (rau sach)) - thanh trung cua nhung ((cong tan) OR (cong san)) tran ban*.