Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
thieu sang » chieu sang, thieu khang, thieu quang
thanh tung » thanh cong
cua truong » cua trung, xuan truong, cac truong
hoc thieu » toc thieu, hoc hien
tung cua » trung cua, tuong cua, dung cua
tan toan » tap toan, van toan, dan toan

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 tung cua truong cong ((tan toan) or (tan tran)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh tung cua truong cong ((tan toan) OR (tan tran)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh tung cua truong cong ((tan toan) or (tan tran)) ban*.