Perhaps you should try some spelling variations:
thang long » thanh cong
thieu sang » chieu sang, thieu khang, thieu quang
thanh phan » thanh pho, thanh san, thanh toan
canh tinh » hanh tinh, manh tinh, canh tranh
dung cong » dung trong
tinh han » trinh han, tinh than, tinh hai
phan ba » phan bo, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sang - canh tinh han ((dung cong) or (thang long)) thanh phan ba~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - canh tinh han ((dung cong) OR (thang long)) thanh phan ba.
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - canh tinh han ((dung cong) or (thang long)) thanh phan ba*.