Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
dong cong » duong cong, dung cong, dang cong
tung van » trung van, tang van, dung van
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((trieu tinh) or (chieu sach)) - thanh tung van dong cong tan ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((trieu tinh) OR (chieu sach)) - thanh tung van dong cong tan ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((trieu tinh) or (chieu sach)) - thanh tung van dong cong tan ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho ((trieu tinh) or (chieu sach)) - thanh tung van dong cong tan ((toan cau) OR (toan ban))*.