Perhaps you should try some spelling variations:
thanh luan » tranh luan, thanh xuan, thanh tuan
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
van nhung » van nhuong, va nhung, van hung
cong sach » ong sach, song sach, duong sach
ho chieu » theo chieu, doi chieu, mot chieu
thai cao » thoai cac, thuat cao, toan cao
tai cao » tao cao, tai sao, tai cac

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