Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
trung cad » trung cap, trung ca, trung can
cad trong » cay trong, ca trong, chat trong
tac phan » tai phan, tac phat, cac phan
tac pham » thuc pham, san pham

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 cad trong cong ((tac phan) or (tac pham)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - thanh trung cad trong cong ((tac phan) OR (tac pham)) cac.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - thanh trung cad trong cong ((tac phan) or (tac pham)) cac*.