Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
tieu xanh » tieu danh, chieu xanh, dieu hanh
hang cong » dang cong, hang nong, bang cong
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
tran van » luan van
tan van » tang van, luan van, dang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - anh tang cua ((nhung cong) or (hang cong)) ((tan van) or (tran van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - anh tang cua ((nhung cong) OR (hang cong)) ((tan van) OR (tran van)) ban.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - anh tang cua ((nhung cong) or (hang cong)) ((tan van) or (tran van)) ban*.