Perhaps you should try some spelling variations:
nhung thong » chung thong, nhung chong, nhung phong
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
hanh hang » thanh hang, hang hang, hanh han
ca nhung » cua nhung, cam nhung, va nhung
nam toan » tam toan, nam thanh, nam thang
hang ca » hang va, nang cao, hang tai
nam tan » nam dan, nam tai, nam van

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)) - hanh hang ca nhung thong ((nam toan) OR (nam tan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - hanh hang ca nhung thong ((nam toan) OR (nam tan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (nhieu tang)) - hanh hang ca nhung thong ((nam toan) OR (nam tan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhieu tang)) - hanh hang ca nhung thong ((nam toan) OR (nam tan)) cau*.