Perhaps you should try some spelling variations:
"bo sach ki thuat ung dung doi marketing" » "bo sach ki thuat ung dung dong marketing", "bo sach ki thuat ung dung tri marketing", "bo sach ki thuat ung dung thi marketing", "bo sach ki thuat dung dung doi marketing", "bo sach ki thuat hung dung doi marketing", "bo sach ki thuat xung dung doi marketing", "bo sach ky thuat ung dung doi marketing", "bo sach ki thuat ung huong doi marketing", "bo sach ki thuat ung dung tai marketing", "bo sach ki thuat ung dung co marketing", "hoc sach ki thuat ung dung doi marketing", "bo sach kinh thuat ung dung doi marketing", "bo sach bai thuat ung dung doi marketing", "bo sach kem thuat ung dung doi marketing"
"co sach ha thich ung dung va marketing" » "co sach ha thich ung dung van marketing", "co sach ha thich ung dung tac marketing", "co sach ha thich ung dung gia marketing", "co sach ha thich anh dung va marketing", "co sach ha thich ngu dung va marketing", "co sach ha trinh ung dung va marketing", "co sach hanh thich ung dung va marketing", "co sach chu thich ung dung va marketing", "co sach hoa thinh ung dung va marketing", "cuon sach ha thich ung dung va marketing", "hoc sach ha thich ung dung va marketing", "co sach nha thich ung dung va marketing", "co sach han thich ung dung va marketing", "co sach xa thich ung dung va marketing"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("co sach ha thich ung dung va marketing") or ("bo sach ki thuat ung dung doi marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("co sach ha thich ung dung va marketing") OR ("bo sach ki thuat ung dung doi marketing")).
• Removing quotes may allow a broader search: (( co sach ha thich ung dung va marketing ) or ( bo sach ki thuat ung dung doi marketing )).
• Adding a wildcard symbol may retrieve word variants: (("co sach ha thich ung dung va marketing") or ("bo sach ki thuat ung dung doi marketing"))*.