Perhaps you should try some spelling variations:
"bo sach y thuat phung dung tvqg marketing" » "bo sach y thuat phung dung trong marketing", "bo sach y thuat phung dung tri marketing", "bo sach y thuat hung dung tvqg marketing", "bo sach y thuat chung dung tvqg marketing", "bo sach y thuat nhung dung tvqg marketing", "bo sach y thuat phuong dung tvqg marketing", "bo sach y thuat phung dang tvqg marketing", "bo sach y thuat phung dung tong marketing", "co sach y thuat phung dung tvqg marketing", "bo sach ky thuat phung dung tvqg marketing", "bo sach my thuat phung dung tvqg marketing", "bo sach kxy thuat phung dung tvqg marketing"
"hoc sach dau tu pdung dung tai marketing" » "hoc sach dau tu pdung dung tri marketing", "hoc sach dau tu pdung dung tac marketing", "hoc sach dau tu pdung dung thi marketing", "hoc sach dau tu dung dung tai marketing", "hoc sach dau tu phuong dung tai marketing", "hoc sach dau tu ung dung tai marketing", "hoc sinh dau tu pdung dung tai marketing", "hoc cac dau tu pdung dung tai marketing", "hoc anh dau tu pdung dung tai marketing", "hoc sach dao tu pdung dung tai marketing", "hoc sach dat tu pdung dung tai marketing", "hoc sach mau tu pdung dung tai marketing", "hoc sach dau su dung dung tai marketing", "hoc sach dau tu vung dung tai 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: (("hoc sach dau tu pdung dung tai marketing") or ("bo sach y thuat phung dung tvqg marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("hoc sach dau tu pdung dung tai marketing") OR ("bo sach y thuat phung dung tvqg marketing")).
• Removing quotes may allow a broader search: (( hoc sach dau tu pdung dung tai marketing ) or ( bo sach y thuat phung dung tvqg marketing )).
• Adding a wildcard symbol may retrieve word variants: (("hoc sach dau tu pdung dung tai marketing") or ("bo sach y thuat phung dung tvqg marketing"))*.