Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
mot chieu » doi chieu, ho chieu
hoc thieu » toc thieu, hoc hien
hanh luan » khanh luan, hanh luat, han luan
hang luan » tang luan, dung luan
van nhung » van nhuong, va nhung, van hung
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van
van cau » van dau, van hau, 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: ((mot chieu) OR (hoc thieu)) xanh - ((hanh luan) OR (hang luan)) van nhung cong tan van cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (hoc thieu)) xanh - ((hanh luan) OR (hang luan)) van nhung cong tan van cau~".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (hoc thieu)) xanh - ((hanh luan) OR (hang luan)) van nhung cong tan van cau*.