Perhaps you should try some spelling variations:
thanh chung » thanh chuong, thanh hung, thanh phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
chung han » chung nhan, chung than, chuong han
cong lang » cong vang, cong luong, cong quang
han dung » chan dung, han duong, hanh dung
cong van » cong vang, cong san, song van

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 - thanh chung han dung ((cong van) or (cong lang)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh chung han dung ((cong van) OR (cong lang)) phan tu*.