Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
nhung duong » nhung dung, nhung huong, chuong duong
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu lang » chieu sang, hieu quang, nhieu tang
doi hieu » doi chieu, doc hieu, doi hien
tranh va » tranh van, trang va, trinh va
ban cau » bang cau, ban can, van cau

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - hanh tranh va ((nhung duong) OR (nhung tuong)) van ban cau~".
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - hanh tranh va ((nhung duong) OR (nhung tuong)) van ban cau*.