Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
tranh luan » trinh luan, trinh luat, doanh luan
thanh van » thanh san, thanh toan, thanh phan
ho chieu » theo chieu, hoc thieu, doi chieu
luan han » luan hoan, luan phan, luan van
han cong » phan cong, hang cong, hanh cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo tieu)) xanh - canh tranh luan han cong thanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) xanh - canh tranh luan han cong thanh van ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo tieu)) xanh - canh tranh luan han cong thanh van ban*.