Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, trung tam, truong thanh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
tran tuan » tran xuan, tran quang, tran thanh
trung cap » truong cao, trung tam
trai tuan » tri tuan, tai tuan, trang tuan
cong tac » cong ty
tac trai » tam trai, khac trai, rac thai

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: doi chieu xanh - thanh ((((trung tuan) OR (tran tuan))) OR (trung cap)) nhung cong tac trai tuan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - thanh ((((trung tuan) OR (tran tuan))) or (trung cap)) nhung cong tac trai tuan~".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh ((((trung tuan) OR (tran tuan))) or (trung cap)) nhung cong tac trai tuan*.