Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
tranh va » tranh van, trang va, trinh va
nong san » cong san, nong dan, trong san
dong san » cong san, dong bang, dong von
than cau » toan cau, phan cau, than cap
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) OR (chieu xanh)) - canh tranh va nang ((nong san) or (dong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu xanh)) - canh tranh va nang ((nong san) OR (dong san)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (chieu xanh)) - canh tranh va nang ((nong san) or (dong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (chieu xanh)) - canh tranh va nang ((nong san) or (dong san)) than cau*.