Perhaps you should try some spelling variations:
van nhuong » van chuong, van phuong, van huong
cong thanh » dong thanh, cong trinh, cong tan
mot chieu » doi chieu, ho chieu
tranh van » tran van, trinh van, thanh van
cong manh » cong danh, duong manh, hoang manh
doc hieu » toc thieu, hoc thieu, hoc hien
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doc hieu)) xanh - canh tranh van nhuong ((cong manh) OR (cong thanh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doc hieu)) xanh - canh tranh van nhuong ((cong manh) OR (cong thanh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (doc hieu)) xanh - canh tranh van nhuong ((cong manh) OR (cong thanh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doc hieu)) xanh - canh tranh van nhuong ((cong manh) OR (cong thanh)) toan tap*.