Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
chua xang » chua nang, chuc nang, chu bang
hang cong » dang cong, hang nong, bang cong
chu xanh » chu manh, chieu xanh, chuc danh
anh dung » anh dong, anh huong, sach dung
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho ((chu xanh) or (chua xang)) - anh dung va ((nhung cong) OR (hang cong)) san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho ((chu xanh) OR (chua xang)) - anh dung va ((nhung cong) OR (hang cong)) san toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho ((chu xanh) or (chua xang)) - anh dung va ((nhung cong) OR (hang cong)) san toan cau".
• Adding a wildcard symbol may retrieve word variants: cho ((chu xanh) or (chua xang)) - anh dung va ((nhung cong) OR (hang cong)) san toan cau*.