Perhaps you should try some spelling variations:
"bo sach my thuat phung dang trinh marketing" » "bo sach my thuat phung dang tri marketing", "bo sach my thuat phung dang trong marketing", "bo sach my thuat hung dang trinh marketing", "bo sach my thuat chung dang trinh marketing", "bo sach my thuat nhung dang trinh marketing", "bo sach my thuat phung dung trinh marketing", "bo sach my thuat phuong dung trinh marketing", "bo sach my thuat phuong dong trinh marketing", "bo sach my thuat phung dang tinh marketing", "bo sach my thuat phung dan trinh marketing", "bo sach my thuat phung dong trinh marketing", "bo sach ky thuat phung dang trinh marketing", "bo sach ki thuat phung dang trinh marketing", "bo sach va thuat phung dang trinh marketing", "co sach my thuat phung dang trinh marketing", "hoc sach my thuat phung dang trinh marketing", "bo sach y thuat phung dang trinh marketing", "bo sach ty thuat phung dang trinh marketing", "bo sach mau thuat phung dang trinh marketing"
"bo sach my thuat dung dung dat marketing" » "bo sach my thuat dung dung tac marketing", "bo sach my thuat dung dung van marketing", "bo sach my thuat dung dung thuat marketing", "bo sach my thuat hung dung dat marketing", "bo sach my thuat ung dung dat marketing", "bo sach my thuat xung dung dat marketing", "bo sach my thuat dung ung dat marketing", "bo sach my thuat dung dong dat marketing", "bo sach ky thuat dung dung dat marketing", "bo sach ki thuat dung dung dat marketing", "bo sach va thuat dung dung dat marketing", "bo sach my thuat dung dung va marketing", "bo sach my thuat dung dung tai marketing", "co sach my thuat dung dung dat marketing", "hoc sach my thuat dung dung dat marketing", "bo sach y thuat dung dung dat marketing", "bo sach ty thuat dung dung dat marketing", "bo sach mau thuat dung dung dat marketing"

Try widening your search to All Fields.

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 phung dang trinh marketing") or ("bo sach my thuat dung dung dat marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach my thuat phung dang trinh marketing") OR ("bo sach my thuat dung dung dat marketing")).
• Removing quotes may allow a broader search: (( bo sach my thuat phung dang trinh marketing ) or ( bo sach my thuat dung dung dat marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach my thuat phung dang trinh marketing") or ("bo sach my thuat dung dung dat marketing"))*.