Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
quang dung » quang trung, cuong dung
doi chieu » doi chi, ho chieu, mot chieu
cong luan » tong luan, cong tuan, dong luan
luan phan » luan van, luan hoan
doc hieu » toc thieu, hoc thieu, hoc hien
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: ((doi chieu) OR (doc hieu)) xanh - canh trinh ((quang dung) or (ung dung)) cong luan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) xanh - canh trinh ((quang dung) OR (ung dung)) cong luan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) xanh - canh trinh ((quang dung) or (ung dung)) cong luan phan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) xanh - canh trinh ((quang dung) or (ung dung)) cong luan phan cau*.