Perhaps you should try some spelling variations:
"bo sac ky thuat nang quan trong marketing" » "bo sac ky thuat nang quan tvqg marketing", "bo sac ky thuat bang quan trong marketing", "bo sac ky thuat mang quan trong marketing", "bo sac ky thuat trang quan trong marketing", "bo sac ky thuat nang gian trong marketing", "bo sac ky thuat ban quan trong marketing", "bo sac ky thuat nang suat trong marketing", "bo cac ky thuat nang quan trong marketing", "bo sai ky thuat nang quan trong marketing"
"bo sach dao thuat dung ung tri marketing" » "bo sach dao thuat dung ung tvqg marketing", "bo sach dao thuat dung ung _ marketing", "bo sach dao thuat dung ung cuu marketing", "bo sach dao thuat hung ung tri marketing", "bo sach dao thuat ung ung tri marketing", "bo sach dao thuat xung ung tri marketing", "bo sach dao phat dung ung tri marketing", "bo sach va thuat dung ung tri marketing", "bo sach cac thuat dung ung tri marketing", "bo lanh dao thuat dung ung tri marketing", "bo sach dao thuat dung cong tri marketing", "co sach dao thuat dung ung tri marketing", "hoc sach dao thuat dung ung tri marketing", "bo sach dao thuat dung dung tri marketing", "bo sach dao thuat dung cung tri marketing", "bo sach dao thuat 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 nang quan trong marketing") or ("bo sach dao thuat dung ung tri marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sac ky thuat nang quan trong marketing") OR ("bo sach dao thuat dung ung tri marketing"))*.
• Removing quotes may allow a broader search: (( bo sac ky thuat nang quan trong marketing ) or ( bo sach dao thuat dung ung tri marketing ))*.