Perhaps you should try some spelling variations:
"bo sach my thuat ung dung tai marketing" » "bo sach my thuat ung dung tri marketing", "bo sach my thuat ung dung tac marketing", "bo sach my thuat ung dung thi marketing", "bo sach my thuat dung dung tai marketing", "bo sach my thuat hung dung tai marketing", "bo sach my thuat song dung tai marketing", "bo sach ky thuat ung dung tai marketing", "bo sach va thuat ung dung tai marketing", "co sach my thuat ung dung tai marketing", "bo sach y thuat ung dung tai marketing", "bo sach ty thuat ung dung tai marketing", "bo sach mau thuat ung dung tai marketing"
"hoc sach ki thuat xung dung sai marketing" » "hoc sach ki thuat xung dung tri marketing", "hoc sach ki thuat xung dung tac marketing", "hoc sach ki thuat xung dung van marketing", "hoc sach ki thuat dung dung sai marketing", "hoc sach ki thuat hung dung sai marketing", "hoc sach ki thuat song dung sai marketing", "hoc sach ki thuat cung dung sai marketing", "hoc sach ki thuat cuong dung sai marketing", "hoc sinh ki thuat xung dung sai marketing", "hoc cac ki thuat xung dung sai marketing", "hoc anh ki thuat xung dung sai marketing", "hoc sach ky thuat xung dung sai marketing", "hoc sach ki thuat xung dung va marketing", "hoc sach ki thuat xung dung dat marketing", "hoc sach ki thuat xung dung ha marketing", "hoc sach kinh thuat xung dung sai marketing", "hoc sach bai thuat xung dung sai marketing", "hoc sach kem thuat xung dung sai marketing"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("bo sach my thuat ung dung tai marketing") or ("hoc sach ki thuat xung dung sai marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach my thuat ung dung tai marketing") OR ("hoc sach ki thuat xung dung sai marketing"))*.
• Removing quotes may allow a broader search: (( bo sach my thuat ung dung tai marketing ) or ( hoc sach ki thuat xung dung sai marketing ))*.