Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
dang luan » dung luan, tang luan, hang luan
luan hung » luan chung, lan hung, luan ung
hung cong » nhung cong, hung cuong, phung cong
doc hieu » toc thieu, hoc hien
anh dang » anh dong, anh dung, anh bang
cong san » cong tac
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) OR (hoc thieu)) xanh - anh dang luan hung cong san ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) xanh - anh dang luan hung cong san ((than cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc thieu)) xanh - anh dang luan hung cong san ((than cau) or (phan cau))".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (hoc thieu)) xanh - anh dang luan hung cong san ((than cau) or (phan cau))*.