Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tinh bang » tinh sang, tinh lang, tinh quang
theo chu » theo chieu, cho chu, chao chu
chu xang » chua xang, chu bang, chuc nang
cong tan » cong tac, cong san, cong ty
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
bang va » hang va, ban va, trang va

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 chu xang - tinh bang va nhung ((cong tan) OR (cong thanh)) ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xang - tinh bang va nhung ((cong tan) OR (cong thanh)) ((toan cau) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chu xang - tinh bang va nhung ((cong tan) OR (cong thanh)) ((toan cau) or (toan ban))*.