Perhaps you should try some spelling variations:
"bo sach bai chat trong dung tri marketing" » "bo sach bai chat trong dung trong marketing", "bo sach bai chat trong dung tvqg marketing", "bo sach bai chat trong dung _ marketing", "bo sach bai nhat trong dung tri marketing", "bo sach bai thuat trong dung tri marketing", "bo sach bai chat luong dung tri marketing", "bo sach bai chat thong dung tri marketing", "bo sach bai chat trung dung tri marketing", "bo sach bai chat trong rung tri marketing", "bo sach dao chat trong dung tri marketing", "bo cac bai chat trong dung tri marketing", "bo sach xa chat trong dung tri marketing", "bo sach bai hat trong dung tri marketing", "bo sach ban chat trong dung tri marketing", "bo sach bao chat trong dung tri marketing", "bo sach bai chat trong dung tai marketing", "bo sach bai chat trong dung tren marketing", "bo sach bai chat trong dung doi marketing", "co sach bai chat trong dung tri marketing", "hoc sach bai chat trong dung tri marketing"
"bo sach ki thuat nhung dung sai marketing" » "bo sach ki thuat nhung dung tac marketing", "bo sach ki thuat nhung dung van marketing", "bo sach ki thuat nhung dung thi marketing", "bo sach ki thuat hung dung sai marketing", "bo sach ki thuat chung dung sai marketing", "bo sach ki thuat chuong dung sai marketing", "bo sach ki thuat phuong dung sai marketing", "bo sach ki thuat ung dung sai marketing", "bo sach ki thuat thong dung sai marketing", "bo sach ky thuat nhung dung sai marketing", "bo sach ki thuat nhung dung tai marketing", "bo sach ki thuat nhung dung va marketing", "bo sach ki thuat nhung dung dat marketing", "co sach ki thuat nhung dung sai marketing", "hoc sach ki thuat nhung dung sai marketing", "bo sach kinh thuat nhung dung sai marketing", "bo sach kem thuat nhung dung sai marketing", "bo sach doi thuat nhung dung sai 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 ki thuat nhung dung sai marketing") or ("bo sach bai chat trong dung tri marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach ki thuat nhung dung sai marketing") OR ("bo sach bai chat trong dung tri marketing")).
• Removing quotes may allow a broader search: (( bo sach ki thuat nhung dung sai marketing ) or ( bo sach bai chat trong dung tri marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach ki thuat nhung dung sai marketing") or ("bo sach bai chat trong dung tri marketing"))*.