Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, nhung don
trung cap » truong cao, trung tam
hang cong » dang cong, hang nong, bang cong
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - manh trung cap ((nhung cong) or (hang cong)) dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - manh trung cap ((nhung cong) OR (hang cong)) dan van ban.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - manh trung cap ((nhung cong) or (hang cong)) dan van ban*.