Perhaps you should try some spelling variations:
nhung duong » nhung dung, 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
duong van » duong va, luong va, dang van
tranh va » tranh van, trang va, trinh va
van tan » van tuan, van ban, van tai
tan cau » toan cau, van cau, tan ca

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