Perhaps you should try some spelling variations:
"hoc sach ky thuat ung dung trong marketing" » "hoc sach ky thuat ung dung tri marketing", "hoc sach ky thuat dung dung trong marketing", "hoc sach ky thuat hung dung trong marketing", "hoc sach ky thuat xung dung trong marketing", "hoc sinh ky thuat ung dung trong marketing", "hoc cac ky thuat ung dung trong marketing", "hoc anh ky thuat ung dung trong marketing", "hoc sac ky thuat ung dung trong marketing", "hoc sach y thuat ung dung trong marketing", "hoc sach ty thuat ung dung trong marketing"
"bo sach tu thuat phung dung tvqg marketing" » "bo sach tu thuat phung dung tri marketing", "bo sach tu thuat hung dung tvqg marketing", "bo sach tu thuat chung dung tvqg marketing", "bo sach tu thuat nhung dung tvqg marketing", "bo sach tu thuat phuong dung tvqg marketing", "bo sach tu thuat phung dang tvqg marketing", "bo sach tu thuat phung dung tong marketing", "bo sach thu thuat phung dung tvqg marketing", "bo sach te thuat phung dung tvqg marketing", "bo sach tu thua phung dung tvqg marketing", "co sach tu thuat phung dung tvqg marketing", "bo cach tu thuat phung dung tvqg marketing", "bo sach ty thuat phung dung tvqg marketing"

You may be able to get more results by adjusting your search query.

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