Perhaps you should try some spelling variations:
"bo sach ky thuat ung dung tong marketing" » "bo sach ky thuat ung dung trong marketing", "bo sach ky thuat ung dung dong marketing", "bo sach ky thuat ung dung tvqg marketing", "bo sach ky thuat dung dung tong marketing", "bo sach ky thuat hung dung tong marketing", "bo sach ky thuat xung dung tong marketing", "bo sach ky thuat ung dung thong marketing", "bo sach ky thuat ung dung cong marketing", "co sach ky thuat ung dung tong marketing", "hoc sach ky thuat ung dung tong marketing", "bo sac ky thuat ung dung tong marketing", "bo sach y thuat ung dung tong marketing", "bo sach ty thuat ung dung tong marketing"
"bo sach nha thuc dang dung tai marketing" » "bo sach nha thuc dang dung tri marketing", "bo sach nha thuc dang dung tac marketing", "bo sach nha thuc dang dung thi marketing", "bo sach nha thuoc dang dung tai marketing", "bo sach nha thuc dan dung tai marketing", "bo sach nha thuc dung dung tai marketing", "bo sach nha thuc dang hung tai marketing", "bo sach nha thuc dang quang tai marketing", "bo sach nhan thuc dang dung tai marketing", "bo sach nham thuc dang dung tai marketing", "co sach nha thuc dang dung tai marketing", "hoc sach nha thuc dang dung tai 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 nha thuc dang dung tai marketing") or ("bo sach ky thuat ung dung tong marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach nha thuc dang dung tai marketing") OR ("bo sach ky thuat ung dung tong marketing")).
• Removing quotes may allow a broader search: (( bo sach nha thuc dang dung tai marketing ) or ( bo sach ky thuat ung dung tong marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach nha thuc dang dung tai marketing") or ("bo sach ky thuat ung dung tong marketing"))*.