Perhaps you should try some spelling variations:
"bo sach dao thuan ung dung trong marketing" » "bo sach dao thuan ung dung tvqg marketing", "bo sach tao thuan ung dung trong marketing", "bo sach dao thanh ung dung trong marketing", "bo sach duc thuan ung dung trong marketing", "bo sach dao thuat dung dung trong marketing", "bo sach dao thuat hung dung trong marketing", "bo sach dao thuat xung dung trong marketing", "bo lanh dao thuan ung dung trong marketing", "co sach dao thuan ung dung trong marketing", "hoc sach dao thuan ung dung trong marketing"
"bo bach mai thuat ung dung tri marketing" » "bo bach mai thuat ung dung tvqg marketing", "bo bach mai thuat ung dung _ marketing", "bo bach mai thuat ung dung cuu marketing", "bo bach mi thuat ung dung tri marketing", "bo bach ma thuat ung dung tri marketing", "bo bach giai thuat ung dung tri marketing", "bo bach mai thuat dung dung tri marketing", "bo bach mai thuat hung dung tri marketing", "bo bach mai thuat xung dung tri marketing", "bo bach mai thuat ung dung tai marketing", "bo bach mai thuat ung dung tren marketing", "bo bach mai thuat ung dung sai marketing", "bo trach mai thuat ung dung tri marketing", "noi bach mai thuat ung dung tri marketing"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach dao thuan ung dung trong marketing") OR ("bo bach mai thuat ung dung tri marketing"))~.
• Removing quotes may allow a broader search: (( bo sach dao thuan ung dung trong marketing ) or ( bo bach mai thuat ung dung tri marketing ))~.
• Adding a wildcard symbol may retrieve word variants: (("bo sach dao thuan ung dung trong marketing") or ("bo bach mai thuat ung dung tri marketing"))*.