Perhaps you should try some spelling variations:
"co sach ki thuat hung dung tvqg marketing" » "co sach ki thuat hung dung trong marketing", "co sach ki thuat hung dung tri marketing", "co sach ki thuat dung dung tvqg marketing", "co sach ki thuat xung dung tvqg marketing", "co sach ki thuat chuong dung tvqg marketing", "co sach ki thuat nhung dung tvqg marketing", "co sach ki thuat phung dung tvqg marketing", "co sach ki thuat hung dung tong marketing", "co sach ky thuat hung dung tvqg marketing", "cuon sach ki thuat hung dung tvqg marketing", "hoc sach ki thuat hung dung tvqg marketing", "co sach kinh thuat hung dung tvqg marketing", "co sach bai thuat hung dung tvqg marketing", "co sach kem thuat hung dung tvqg marketing"
"bo sach dao thuat ung dung tvqg marketing" » "bo sach dao thuat ung dung trong marketing", "bo sach dao thuat ung dung tri marketing", "bo sach dao thuat ung dung tong marketing", "bo sach dao phat ung dung tvqg marketing", "bo sach va thuat ung dung tvqg marketing", "bo sach cac thuat ung dung tvqg marketing", "bo sach dao thuat dung dung tvqg marketing", "bo sach dao thuat xung dung tvqg marketing", "bo sach dao thuat song dung tvqg marketing", "bo lanh dao thuat ung dung tvqg marketing", "hoc sach dao thuat ung dung tvqg marketing"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("co sach ki thuat hung dung tvqg marketing") or ("bo sach dao thuat ung dung tvqg marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("co sach ki thuat hung dung tvqg marketing") OR ("bo sach dao thuat ung dung tvqg marketing")).
• Removing quotes may allow a broader search: (( co sach ki thuat hung dung tvqg marketing ) or ( bo sach dao thuat ung dung tvqg marketing )).
• Adding a wildcard symbol may retrieve word variants: (("co sach ki thuat hung dung tvqg marketing") or ("bo sach dao thuat ung dung tvqg marketing"))*.