Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, truong thanh
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong danh » cuong danh, cong dan, cong khanh
cong tan » cong tac, cong san, cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh trung cua nhung ((((cong tan) OR (cong thanh))) or (cong danh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh trung cua nhung ((((cong tan) OR (cong thanh))) OR (cong danh)) toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh trung cua nhung ((((cong tan) OR (cong thanh))) or (cong danh)) toan cao*".