Perhaps you should try some spelling variations:
"bo sac ky thuat ung dung tong marketing" » "bo sac ky thuat ung dung trong marketing", "bo sac ky thuat ung dung dong marketing", "bo sac ky thuat ung dung tvqg marketing", "bo sac ky thuat dung dung tong marketing", "bo sac ky thuat hung dung tong marketing", "bo sac ky thuat xung dung tong marketing", "bo sac ky thuat ung dung thong marketing", "bo cac ky thuat ung dung tong marketing", "bo sai ky thuat ung dung tong marketing"
"bo sach xa thuc dung cong van marketing" » "bo sach xa thuc dung cong tac marketing", "bo sach xa thuc dung cong phap marketing", "bo sach xa thuc dung cong tvqg marketing", "bo sach xa thuoc dung cong van marketing", "bo sach xa thuy dung cong van marketing", "bo sach xa tuc dung cong van marketing", "bo sach xa thuc dung trong van marketing", "bo sach xa thuc dung cong vang marketing", "bo sach xa thuc dung cong san marketing", "bo sach xa thuc dung song van marketing", "co sach xa thuc dung cong van marketing", "hoc sach xa thuc dung cong van marketing", "bo sach dao thuc dung cong van marketing", "bo sach nha thuc dung cong van marketing", "bo sach bai thuc dung cong van marketing", "bo sach va thuc dung cong van marketing", "bo sach xa phuc dung cong van marketing", "bo sach a thuc dung cong van 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: (("bo sach xa thuc dung cong van marketing") or ("bo sac ky thuat ung dung tong marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach xa thuc dung cong van marketing") OR ("bo sac ky thuat ung dung tong marketing")).
• Removing quotes may allow a broader search: (( bo sach xa thuc dung cong van marketing ) or ( bo sac ky thuat ung dung tong marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach xa thuc dung cong van marketing") or ("bo sac ky thuat ung dung tong marketing"))*.