Perhaps you should try some spelling variations:
"bo xach takky thuat ung dung trong marketing" » "bo xach takky thuat ung dung tri marketing", "bo xach takky thuat ung dung tvqg marketing", "bo xach tay thuat ung dung trong marketing", "bo xach takky thuat dung dung trong marketing", "bo xach takky thuat hung dung trong marketing", "bo xach takky thuat xung dung trong marketing", "bo sach takky thuat ung dung trong marketing", "bo trach takky thuat ung dung trong marketing", "bo xach takkky thuat ung dung trong marketing", "bo xach takkmy thuat ung dung trong marketing", "bo xach takkkxy thuat ung dung trong marketing"
"hoc sach y thuat dang dung tai marketing" » "hoc sach y thuat dang dung tri marketing", "hoc sach y thuat dang dung tac marketing", "hoc sach y thuat dang dung thi marketing", "hoc sach y thuat dung dung tai marketing", "hoc sach y thuat bang dung tai marketing", "hoc sach y thuat dan dung tai marketing", "hoc sach y thuat dang hung tai marketing", "hoc sach y thuat dang quang tai marketing", "hoc sinh y thuat dang dung tai marketing", "hoc cac y thuat dang dung tai marketing", "hoc anh y thuat dang dung tai marketing", "hoc sach ky thuat dang dung tai marketing", "hoc sach my thuat dang dung tai marketing", "hoc sach kxy thuat dang dung tai 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 xach takky thuat ung dung trong marketing") OR ("hoc sach y thuat dang dung tai marketing"))~.
• Removing quotes may allow a broader search: (( bo xach takky thuat ung dung trong marketing ) or ( hoc sach y thuat dang dung tai marketing ))~.
• Adding a wildcard symbol may retrieve word variants: (("bo xach takky thuat ung dung trong marketing") or ("hoc sach y thuat dang dung tai marketing"))*.