Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
hanh truong » hanh trong, anh truong, manh truong
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
dai nhung » ai nhung, dai khung, dap nhung
van thanh » ban thanh, van tuan
dan toan » van toan, dan than, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((nhieu tang) or (hieu lang)) - hanh truong dai nhung huong ((dan toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((nhieu tang) OR (hieu lang)) - hanh truong dai nhung huong ((dan toan) OR (van thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((nhieu tang) or (hieu lang)) - hanh truong dai nhung huong ((dan toan) or (van thanh)) cau*.