Perhaps you should try some spelling variations:
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"bo sach dao phan dung ung tri marketing" » "bo sach dao phan dung ung tvqg marketing", "bo sach dao phan dung ung _ marketing", "bo sach dao phan dung ung cuu marketing", "bo sach dao phan ung ung tri marketing", "bo sach dao phan dang ung tri marketing", "bo sach dao chan dung ung tri marketing", "bo lanh dao phan dung ung tri marketing", "bo sach dao phat dung ung tri marketing", "bo sach dam phan dung ung tri marketing", "bo sach do phan dung ung tri marketing", "bo sach dao phan dung cong tri marketing", "co sach dao phan dung ung tri marketing", "hoc sach dao phan dung ung tri marketing", "bo sach dao phan dung dung tri marketing", "bo sach dao phan dung cung tri marketing", "bo sach dao phan dung quang tri 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 sac ky thuat dan quang trong marketing") or ("bo sach dao phan dung ung tri marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sac ky thuat dan quang trong marketing") OR ("bo sach dao phan dung ung tri marketing"))*.
• Removing quotes may allow a broader search: (( bo sac ky thuat dan quang trong marketing ) or ( bo sach dao phan dung ung tri marketing ))*.