Perhaps you should try some spelling variations:
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"bo sach ky thuat hung dung tvqg marketing" » "bo sach ky thuat hung dung tri marketing", "bo sach ky thuat dung dung tvqg marketing", "bo sach ky thuat xung dung tvqg marketing", "bo sach ky thuat chuong dung tvqg marketing", "bo sach ky thuat nhung dung tvqg marketing", "bo sach ky thuat phung dung tvqg marketing", "bo sach ky thuat hung dung tong marketing", "co sach ky thuat hung dung tvqg marketing", "hoc sach ky thuat hung dung tvqg marketing", "bo sac ky thuat hung dung tvqg marketing", "bo sach y thuat hung dung tvqg marketing", "bo sach ty thuat hung dung tvqg 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 sach my thuat ung dung trong marketing") or ("bo sach ky thuat hung dung tvqg marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach my thuat ung dung trong marketing") OR ("bo sach ky thuat hung dung tvqg marketing")).
• Removing quotes may allow a broader search: (( bo sach my thuat ung dung trong marketing ) or ( bo sach ky thuat hung dung tvqg marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach my thuat ung dung trong marketing") or ("bo sach ky thuat hung dung tvqg marketing"))*.