Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
trung cao » truong cao, trung cap, trung co
nong van » song van, nong san, tong van
nong dan » cong dan, nong san, nguong dan
ban cau » bang cau, ban can, van cau

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 trung cao dang ((nong van) or (nong dan)) ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh trung cao dang ((nong van) OR (nong dan)) ban cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh trung cao dang ((nong van) or (nong dan)) ban cau*.