Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
van nhung » van nhuong, va nhung, van hung
tan thanh » tran thanh, tang thanh, toan thanh
toan van » tran van, toan ban, tan van
tan than » tan tran, ban than, tam than

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: hoc ((thieu xanh) OR (thien thanh)) - tinh toan van nhung cong ((tan than) OR (tan thanh)) cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien thanh)) - tinh toan van nhung cong ((tan than) OR (tan thanh)) cap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien thanh)) - tinh toan van nhung cong ((tan than) OR (tan thanh)) cap*.