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