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