Perhaps you should try some spelling variations:
doi chieu » doi chi, ho chieu, mot chieu
canh manh » lanh manh, canh tranh, cach mang
dong cong » duong cong, dung cong, dang cong
luan phan » luan van, luan hoan
van phong » van dong, hai phong
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
cua dong » chua dong, cua cong, cua dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (doc hieu)) tinh - canh manh cua dong cong ((luan phan) or (van phong)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) tinh - canh manh cua dong cong ((luan phan) OR (van phong)) tu.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doc hieu)) tinh - canh manh cua dong cong ((luan phan) or (van phong)) tu*.