Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
chieu sach » chinh sach, chiet tach, chieu sang
thanh tran » thanh trang, thanh toan, thanh tra
tran tuan » tran xuan, tran quang, tran thanh
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
san toan » dan toan, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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 khang) or (chieu sach)) - thanh tran tuan dung cong ((san toan) OR (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu khang) OR (chieu sach)) - thanh tran tuan dung cong ((san toan) OR (van toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu khang) or (chieu sach)) - thanh tran tuan dung cong ((san toan) OR (van toan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu khang) or (chieu sach)) - thanh tran tuan dung cong ((san toan) OR (van toan)) cau*.