Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
chua xang » chua nang, chu bang, chua dong
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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 nang) OR (chua xang)) - anh tang cua ((nhung cong) OR (thong cong)) dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc nang) or (chua xang)) - anh tang cua ((nhung cong) OR (thong cong)) dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc nang) or (chua xang)) - anh tang cua ((nhung cong) OR (thong cong)) dan toan cau*.