Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chua nang » chuc nang, kha nang, cuu nang
chua xang » chuc nang, chu bang, chua dong
chu xanh » chu manh, chieu xanh, chuc danh
anh bang » anh hoang, anh quang, tinh bang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap
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 xanh) OR (((chua xang) OR (chua nang)))) - anh bang va nhung cong san toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (((chua xang) OR (chua nang)))) - anh bang va nhung cong san toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (((chua xang) OR (chua nang)))) - anh bang va nhung cong san toan cau*.