Perhaps you should try some spelling variations:
thanh chung » thanh chuong, thanh hung, thanh phuong
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thuc thanh » thuoc thanh, thuc hanh, phuc thanh
chung han » chung nhan, chung than, chuong han
hang cong » dang cong, hang nong, bang cong
cong thuc » cong tac
thanh tap » thanh lap, thanh tai, thanh tay
han hang » hang hang, han chang, ban hang

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 xanh) or (chieu sach)) - thanh chung han hang cong thuc thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - thanh chung han hang cong thuc thanh tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sach)) - thanh chung han hang cong thuc thanh tap*.