Perhaps you should try some spelling variations:
thang long » thanh cong
thieu sang » chieu sang, thieu khang, thieu quang
thanh toan » thanh hoa, thanh san, tinh toan
canh tinh » hanh tinh, manh tinh, canh tranh
tinh luat » trinh luat, hinh luat, trinh luan
dang cong » dung cong
toan ban » van ban

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 luat ((dang cong) or (thang long)) thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - canh tinh luat ((dang cong) OR (thang long)) thanh toan ban.
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - canh tinh luat ((dang cong) or (thang long)) thanh toan ban*.