Perhaps you should try some spelling variations:
nhung trong » hung trong, nhung tuong, thuong trong
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
doanh cua » doanh luan
trong van » trong cac
manh cua » ban cua
ban cau » bang cau, ban can, van cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) or (nhieu tang)) - canh ((manh cua) or (doanh cua)) nhung trong van ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (nhieu tang)) - canh ((manh cua) OR (doanh cua)) nhung trong van ban cau.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (nhieu tang)) - canh ((manh cua) or (doanh cua)) nhung trong van ban cau*.