Perhaps you should try some spelling variations:
thanh trang » thanh trung, hanh trang, thanh thang
thieu sang » chieu sang, thieu khang, thieu quang
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
tran dung » tran dang, tran hung, tran quang
trong tac » trong cac, tuong tac, trong tan
tac toan » tap toan, tam toan, hach toan
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: hoc thieu sang - ((thanh trang) or (thanh tung)) tran dung trong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((thanh trang) OR (thanh tung)) tran dung trong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((thanh trang) or (thanh tung)) tran dung trong tac toan ban*.