Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
toc hieu » toc thieu, doc hieu, hoc thieu
anh dang » anh dung, anh bang, anh danh
anh dong » anh huong, anh son
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - ((anh dang) or (anh dong)) cua ((nhung cong) or (dung cong)) san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - ((anh dang) OR (anh dong)) cua ((nhung cong) OR (dung cong)) san toan ban.
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - ((anh dang) or (anh dong)) cua ((nhung cong) or (dung cong)) san toan ban*.