Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, nhung don
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung cua » truong cua, trung tuan, trung cap
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu, hoc hien
van than » van thanh, van thang, van tuan
dan chan » dan gian, dan ca, van chat

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh trung cua ((nhung cong) OR (hang cong)) ((van than) OR (dan chan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - thanh trung cua ((nhung cong) OR (hang cong)) ((van than) or (dan chan)) cau~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh trung cua ((nhung cong) OR (hang cong)) ((van than) or (dan chan)) cau*.