Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
hanh thang » nhanh thang, thanh thang, hanh trang
chuc danh » chuc nganh, thuc hanh, chuc nang
chua xang » chua nang, chuc nang, chu bang
thang va » hang va, trang va, thong va
cong tan » cong tac, cong san, cong ty
than cau » toan cau, phan cau, than cap
va hang » van hang, va nang, va lang

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 ((chuc danh) OR (chua xang)) - hanh thang va hang ((cong tan) OR (cong thanh)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) or (chua xang)) - hanh thang va hang ((cong tan) OR (cong thanh)) than cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chua xang)) - hanh thang va hang ((cong tan) OR (cong thanh)) than cau*.