Perhaps you should try some spelling variations:
trung thanh » truong thanh
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung tam, tran tuan, truong thanh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
dan khan » dan khanh, dan than, dan khai
dan chan » dan gian, dan ca, van chat

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