Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
quan nhung » qua nhung, cua nhung, luan chung
tranh quan » tranh quang, trinh quan, tranh luan
duong manh » duong van
ho chieu » theo chieu, hoc thieu, doi chieu
toan cao » toan tap
toan ban » van ban

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)) tinh - canh tranh quan nhung duong manh ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) tinh - canh tranh quan nhung duong manh ((toan cao) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo tieu)) tinh - canh tranh quan nhung duong manh ((toan cao) OR (toan ban))*".