Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
trung va » truong va, trang va, trung ha
tran van » luan van
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - thanh ((trung va) or (tran van)) ((nhung cong) or (thong cong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - thanh ((trung va) OR (tran van)) ((nhung cong) OR (thong cong)) dan than cao.
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - thanh ((trung va) or (tran van)) ((nhung cong) or (thong cong)) dan than cao*.