Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
van thanh » ban thanh, van tuan
va trong » va truong, va thong, va tuong
van toan » van tuan, van tan, manh toan
tung va » trung va, tuong va, dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - thanh tung va trong cong ((van toan) or (van thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh tung va trong cong ((van toan) OR (van thanh)) cao*.