Perhaps you should try some spelling variations:
tranh luan » trinh luat, doanh luan, tang luan
trinh luan » trinh luat, trinh quan, trinh han
doi chieu » doc hieu, ho chieu, mot chieu
tong cong » trong cong, cong cong, dung cong
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap
doi chi » doi khi

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 (doi chi)) xanh - canh ((tranh luan) or (trinh luan)) tong cong ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) xanh - canh ((tranh luan) OR (trinh luan)) tong cong ban than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) xanh - canh ((tranh luan) or (trinh luan)) tong cong ban than cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) xanh - canh ((tranh luan) or (trinh luan)) tong cong ban than cau*.