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
hoc chieu » hoc thieu, ho chieu, hoc hien
tam dung » tam duong, tac dung, tan dung
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: hoc chieu sach - thanh trung tam dung ((cong tan) OR (cong thanh)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - thanh trung tam dung ((cong tan) OR (cong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thanh trung tam dung ((cong tan) OR (cong thanh)) toan cao*.