Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhieu tang » chieu sang, hieu lang, nhiet nang
cua thuong » cua phuong, ca thuong, cua huong
cua truong » cua trung, xuan truong, cac truong
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cap » khan cap, thanh lap, thanh cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (nhieu tang)) - anh tang ((cua thuong) OR (cua truong)) cong tan than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (nhieu tang)) - anh tang ((cua thuong) OR (cua truong)) cong tan than cap~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (nhieu tang)) - anh tang ((cua thuong) OR (cua truong)) cong tan than cap*.