Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thanh tung » thanh cong
nong cong » tong cong, nang cong, dong cong
cong cong » cong dong, trong cong, dung cong
doan phan » doanh phan, toan phan, dan phan
tung cua » trung cua, tuong cua, dung cua
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: theo ((chieu sach) or (chieu sang)) - thanh tung cua ((nong cong) OR (cong cong)) doan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - thanh tung cua ((nong cong) OR (cong cong)) doan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chieu sang)) - thanh tung cua ((nong cong) OR (cong cong)) doan phan cac".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - thanh tung cua ((nong cong) OR (cong cong)) doan phan cac*.