Perhaps you should try some spelling variations:
nhung cuong » nhung cong, hung cuong, nhung chong
hieu quang » thieu quang, hieu quan, hieu qua
cuong dang » cuong dung, cuong danh, cuong bang
dang thanh » dong thanh, dang hanh, hoang thanh
hieu sang » chieu sang, hieu lang, nhieu tang
lanh manh » lanh tranh, lan anh, van manh
cua nhung » va nhung
manh cua » doanh cua, ban cua
thanh tu » hanh tu, nhanh tu, thanh tung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sang) or (hieu quang)) - lanh manh cua nhung cuong dang thanh tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sang) OR (hieu quang)) - lanh manh cua nhung cuong dang thanh tu.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sang) or (hieu quang)) - lanh manh cua nhung cuong dang thanh tu*.