Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
thanh cao » thanh cac, thanh thao, thanh cham
tran van » luan van
cong san » cong tac
thanh ca » thanh cha, thanh cac, thanh ha

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