Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
trung phap » trung phan, trung phat, truong phan
trong phap » trong phat, trong thap, trong nha
thong cong » trong cong, tong cong, thong thong
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
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)) - thanh ((trung phap) OR (trong phap)) thong cong tac phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - thanh ((trung phap) OR (trong phap)) thong cong tac phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (chieu sang)) - thanh ((trung phap) OR (trong phap)) thong cong tac phan cac".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - thanh ((trung phap) OR (trong phap)) thong cong tac phan cac*.