Perhaps you should try some spelling variations:
"bo sach ty thuat ung dung trong marketing" » "bo sach ty thuat ung dung tri marketing", "bo sach ty thuat ung dung tvqg marketing", "bo sach ty thuat dung dung trong marketing", "bo sach ty thuat hung dung trong marketing", "bo sach ty thuat xung dung trong marketing", "bo sach my thuat ung dung trong marketing", "bo sach te thuat ung dung trong marketing", "bo sach thu thuat ung dung trong marketing", "co sach ty thuat ung dung trong marketing", "bo sach y thuat ung dung trong marketing", "bo sach tu thuat ung dung trong marketing"
"hoc sach ky thuat song dung tong marketing" » "hoc sach ky thuat song dung dong marketing", "hoc sach ky thuat song dung tvqg marketing", "hoc sach ky thuat song dung trinh marketing", "hoc sach ky thuat song duong tong marketing", "hoc sach ky thuat cong dung tong marketing", "hoc sach ky thuat song dong tong marketing", "hoc sach ky thuat song dung thong marketing", "hoc sach ky thuat song dung cong marketing", "hoc sinh ky thuat song dung tong marketing", "hoc cac ky thuat song dung tong marketing", "hoc anh ky thuat song dung tong marketing", "hoc sac ky thuat song dung tong marketing", "hoc sach y thuat song dung tong marketing", "hoc sach kem thuat song dung tong marketing"

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 ty thuat ung dung trong marketing") or ("hoc sach ky thuat song dung tong marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach ty thuat ung dung trong marketing") OR ("hoc sach ky thuat song dung tong marketing")).
• Removing quotes may allow a broader search: (( bo sach ty thuat ung dung trong marketing ) or ( hoc sach ky thuat song dung tong marketing )).
• Adding a wildcard symbol may retrieve word variants: (("bo sach ty thuat ung dung trong marketing") or ("hoc sach ky thuat song dung tong marketing"))*.