Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
canh sinh » canh tinh, canh binh, tinh sinh
vat nhung » va nhung, vap nhung, vai nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan cac » nhan cach, phan dau, phan lap

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 sach) or (chieu sang)) - canh sinh vat nhung ((cong dan) or (cong san)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - canh sinh vat nhung ((cong dan) OR (cong san)) phan cac.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - canh sinh vat nhung ((cong dan) or (cong san)) phan cac*.