Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doi hieu » doi chieu, doc hieu, doi hien
van tuan » van ban, anh tuan
van quan » van ban
van tan » van ban, van tai, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - hanh tranh cua nhung duong ((van tan) or (((van tuan) OR (van quan)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - hanh tranh cua nhung duong ((van tan) OR (((van tuan) OR (van quan)))) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - hanh tranh cua nhung duong ((van tan) or (((van tuan) OR (van quan)))) cau".
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - hanh tranh cua nhung duong ((van tan) or (((van tuan) OR (van quan)))) cau*.