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, cong tan
tuan dung » tuan duong, tran dung, tan dung
ho chieu » theo chieu, hoc thieu, doi chieu
tuan ban » tuan bang, toan ban, luan ban
than cau » toan cau, phan cau, thanh chau
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: ho chieu sach - thanh trung ((tuan ban) or (tuan dung)) cong thanh ((than cau) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung ((tuan ban) OR (tuan dung)) cong thanh ((than cau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh trung ((tuan ban) or (tuan dung)) cong thanh ((than cau) OR (than cap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung ((tuan ban) or (tuan dung)) cong thanh ((than cau) OR (than cap))*.