Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nhanh than » nhanh thanh, nhanh thang, nhanh thai
cong nong » cong dong, cong cong, cong trong
than cua » nhan cua, thai cua, ban cua
van than » van thanh, van thang, van tuan

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 xanh) or (chieu sach)) - nhanh than cua cong nong ((von tai) or (van than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - nhanh than cua cong nong ((von tai) OR (van than)) cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sach)) - nhanh than cua cong nong ((von tai) or (van than)) cao*.