Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
trong quan » thong quan, tong quan, thong quang
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
cua duong » cua dong, cua huong, qua duong
trong tan » trong cac, trong ca, cong tan
ho chieu » theo chieu, hoc thieu, mot chieu
tran van » luan van

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 (ho chieu)) xanh - hanh tranh cua duong ((trong tan) OR (trong quan)) tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - hanh tranh cua duong ((trong tan) OR (trong quan)) tran van.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (ho chieu)) xanh - hanh tranh cua duong ((trong tan) OR (trong quan)) tran van".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) xanh - hanh tranh cua duong ((trong tan) OR (trong quan)) tran van*.