Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
theo chuc » theo chu, tho chu, treo chu
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan ung » luan hung, luon ung, luan chung
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chuc nang - hanh tang luan ung ((cong dan) or (cong thanh)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chuc nang - hanh tang luan ung ((cong dan) OR (cong thanh)) than cau.
• Adding a wildcard symbol may retrieve word variants: theo chuc nang - hanh tang luan ung ((cong dan) or (cong thanh)) than cau*.