Perhaps you should try some spelling variations:
nhiet nang » nhiet dong, viet nang, nhieu tang
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
tang cua » mang cua, hang cua, tang luan
hang tai » hang va, dung tai
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((nhiet nang) or (hieu lang)) - hanh ((tang cua) or (hang tai)) dung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((nhiet nang) OR (hieu lang)) - hanh ((tang cua) OR (hang tai)) dung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((nhiet nang) or (hieu lang)) - hanh ((tang cua) or (hang tai)) dung cong dan toan cau*.