Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thanh dung » thanh duong, thanh tung, thanh hung
phong cong » phong chong, thong cong, chong cong
dung hai » dung tai, dung ha, dung sai
cong dan » cong san, cong tan, huong dan
chat cao » chat co, chat bao, chat cam
chat cho » chat co, chat thom, cap cho

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 dung hai phong cong dan ((chat cao) or (chat cho))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - thanh dung hai phong cong dan ((chat cao) OR (chat cho)).
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - thanh dung hai phong cong dan ((chat cao) or (chat cho))*.