Perhaps you should try some spelling variations:
thanh nung » thanh tung, thanh hung, thanh dung
nhung cong » thong cong, hang cong, nhung don
dung cong » dung trong
chi tach » chiet tach, chi thanh, che tac
nung cao » nang cao, nhung cau, quang cao
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.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi tach) or (chiu trach)) - thanh nung cao ((nhung cong) or (dung cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi tach) OR (chiu trach)) - thanh nung cao ((nhung cong) OR (dung cong)) dan toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chi tach) or (chiu trach)) - thanh nung cao ((nhung cong) or (dung cong)) dan toan cau*.