Perhaps you should try some spelling variations:
thien thanh » tien thanh, hien hanh, chien tranh
chieu sang » chieu sach, chieu xanh, hieu lang
thanh toan » thanh hoa, thanh san, tinh toan
toan tuan » tran tuan, toan quan, doan tuan
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran tap » toan tap, tran tan, tran tuan

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 (((thien thanh) OR (thi thanh)))) - thanh toan tuan dung cong tac tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (((thien thanh) OR (thi thanh)))) - thanh toan tuan dung cong tac tran tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (((thien thanh) OR (thi thanh)))) - thanh toan tuan dung cong tac tran tap*".