Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
tranh va » tranh van, trang va, trinh va
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cau » toan cau, phan cau, than cap
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (nhieu tang)) - canh tranh va lang ((cong dan) OR (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - canh tranh va lang ((cong dan) OR (cong san)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (nhieu tang)) - canh tranh va lang ((cong dan) OR (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhieu tang)) - canh tranh va lang ((cong dan) OR (cong san)) than cau*.