Perhaps you should try some spelling variations:
"bo sach my thuat dung dung tri marketing" » "bo sach my thuat dung dung trong marketing", "bo sach my thuat dung dung tvqg marketing", "bo sach my thuat dung dung _ marketing", "bo sach my thuat hung dung tri marketing", "bo sach my thuat ung dung tri marketing", "bo sach my thuat xung dung tri marketing", "bo sach my thuat dung ung tri marketing", "bo sach my thuat dung dong tri marketing", "bo sach ki thuat dung dung tri marketing", "bo sach va thuat dung dung tri marketing", "bo sach my thuat dung dung tai marketing", "bo sach my thuat dung dung tren marketing", "bo sach my thuat dung dung sai marketing", "co sach my thuat dung dung tri marketing", "hoc sach my thuat dung dung tri marketing", "bo sach y thuat dung dung tri marketing", "bo sach ty thuat dung dung tri marketing", "bo sach mau thuat dung dung tri marketing"
"bo sach ky thuat cuong dung van marketing" » "bo sach ky thuat cuong dung tac marketing", "bo sach ky thuat cuong dung phap marketing", "bo sach ky thuat cuong dung tvqg marketing", "bo sach ky thuat chuong dung van marketing", "bo sach ky thuat cong dung van marketing", "bo sach ky thuat tuong dung van marketing", "bo sach ky thuat tuong duong van marketing", "bo sach ky thuat ung dung van marketing", "bo sach ky thuat thong dung van marketing", "bo sach ky thuat cuong duong van marketing", "bo sach ky thuat cuong dung va marketing", "bo sach ky thuat cuong dang van marketing", "co sach ky thuat cuong dung van marketing", "hoc sach ky thuat cuong dung van marketing", "bo sac ky thuat cuong dung van marketing", "bo sach y thuat cuong dung van marketing", "bo sach ty thuat cuong dung 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 my thuat dung dung tri marketing") or ("bo sach ky thuat cuong dung van marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach my thuat dung dung tri marketing") OR ("bo sach ky thuat cuong dung van marketing")).
• Removing quotes may allow a broader search: (( bo sach my thuat dung dung tri marketing ) or ( bo sach ky thuat cuong dung van marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach my thuat dung dung tri marketing") or ("bo sach ky thuat cuong dung van marketing"))*.