Perhaps you should try some spelling variations:
chua xang » chua nang, chuc nang, chu bang
cong chan » cong nhan, cong chat, cong khan
chan dung » van dung, dan dung
dung cong » dung trong
chu manh » ho manh, chu han, chu van
cong van » cong vang, cong san, song van
toan ban » van ban

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 ((chua xang) OR (chu manh)) - thanh cong chan dung cong van ((toan tap) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (chu manh)) - thanh cong chan dung cong van ((toan tap) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (chu manh)) - thanh cong chan dung cong van ((toan tap) OR (toan ban))*.