Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
doc chieu » doc hieu, doi chieu, toc thieu
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cau » toan cau, phan cau, than cap
tam han » tam than, tam chan, tam hon

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu sach - thanh trung tam han ((cong tan) OR (cong san)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc chieu sach - thanh trung tam han ((cong tan) OR (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: doc chieu sach - thanh trung tam han ((cong tan) OR (cong san)) than cau*.