Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
trung tuan » trung thanh, trung tam, tran tuan
tuan dang » tran dang, tuan bang, tuan dung
dang cong » dung cong
manh toan » thanh toan, anh tuan, tinh 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 ((chieu sang) or (chieu sach)) - thanh trung tuan dang cong ((van toan) or (manh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu sach)) - thanh trung tuan dang cong ((van toan) OR (manh toan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu sach)) - thanh trung tuan dang cong ((van toan) or (manh toan)) ban*.