Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh thao » thanh thanh, thanh thang, thanh pho
hoc thieu » toc thieu, hoc hien
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
thanh cao » thanh ca, thanh cac, thanh cham
tran van » luan van

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 - hanh tran van nhung ((cong tac) OR (cong ty)) ((thanh cao) OR (thanh thao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh tran van nhung ((cong tac) or (cong ty)) ((thanh cao) OR (thanh thao))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tran van nhung ((cong tac) or (cong ty)) ((thanh cao) OR (thanh thao))*.