Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh
nhieu tang » nhiet nang
nhung cong » dung cong, thong cong, hang cong
hieu lang » hieu quang, hieu van, biet lang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (((hieu lang) OR (nhieu tang)))) - thanh trung cua nhung cong tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (((hieu lang) OR (nhieu tang)))) - thanh trung cua nhung cong tac toan tap~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (((hieu lang) OR (nhieu tang)))) - thanh trung cua nhung cong tac toan tap*.