Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
cua truong » cua trung, xuan truong, cac truong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
dan toan » van toan, dan than, manh 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 trung cua truong cong ((dan toan) or (tinh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh trung cua truong cong ((dan toan) OR (tinh toan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trung cua truong cong ((dan toan) or (tinh toan)) ban*.