Perhaps you should try some spelling variations:
"bo sach my thuat xung dung trong marketing" » "bo sach my thuat xung dung tri marketing", "bo sach my thuat hung dung trong marketing", "bo sach my thuat ung dung trong marketing", "bo sach my thuat song dung trong marketing", "bo sach my thuat dung dung trong marketing", "bo sach my thuat cung dung trong marketing", "bo sach ky thuat xung dung trong marketing", "bo sach ki thuat xung dung trong marketing", "bo sach va thuat xung dung trong marketing", "co sach my thuat xung dung trong marketing", "hoc sach my thuat xung dung trong marketing", "bo sach y thuat xung dung trong marketing", "bo sach ty thuat xung dung trong marketing", "bo sach mau thuat xung dung trong marketing"
"bo sach my thuat dung ung tvqg marketing" » "bo sach my thuat dung ung tri marketing", "bo sach my thuat hung ung tvqg marketing", "bo sach my thuat ung ung tvqg marketing", "bo sach my thuat song ung tvqg marketing", "bo sach ky thuat dung ung tvqg marketing", "bo sach ki thuat dung ung tvqg marketing", "bo sach va thuat dung ung tvqg marketing", "bo sach my thuat dung cong tvqg marketing", "co sach my thuat dung ung tvqg marketing", "hoc sach my thuat dung ung tvqg marketing", "bo sach y thuat dung ung tvqg marketing", "bo sach ty thuat dung ung tvqg marketing", "bo sach mau thuat dung ung tvqg marketing"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"bo sach my thuat dung ung tvqg marketing\") OR (\"bo sach my thuat xung dung trong marketing\"))~".
• Removing quotes may allow a broader search: (( bo sach my thuat dung ung tvqg marketing ) OR ( bo sach my thuat xung dung trong marketing ))~.
• Adding a wildcard symbol may retrieve word variants: (("bo sach my thuat dung ung tvqg marketing") OR ("bo sach my thuat xung dung trong marketing"))*.