Perhaps you should try some spelling variations:
nhung luong » hung luong, nhung huong, nhung tuong
hanh tranh » canh tranh, hanh trinh, hanh trang
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
tranh va » tranh van, trang va, trinh va
luong va » dung va
tan cau » toan cau, van cau, tan ca
va tan » van tan, va toan, va than

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) or (chieu sang)) - hanh tranh va nhung luong va tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (chieu sang)) - hanh tranh va nhung luong va tan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (chieu sang)) - hanh tranh va nhung luong va tan cau*.