Perhaps you should try some spelling variations:
"cuon sach ki thuat ung dung tvqg marketing" » "cuon sach ki thuat ung dung trong marketing", "cuon sach ki thuat dung dung tvqg marketing", "cuon sach ki thuat hung dung tvqg marketing", "cuon sach ki thuat xung dung tvqg marketing", "duong sach ki thuat ung dung tvqg marketing", "cuoc cach ki thuat ung dung tvqg marketing", "co sach ki thuat ung dung tvqg marketing", "cuon sach ki thuat ung dung tong marketing", "cuon sach kinh thuat ung dung tvqg marketing", "cuon sach bai thuat ung dung tvqg marketing", "cuon sach kem thuat ung dung tvqg marketing"
"bo sach ky thuat ung dung tri marketing" » "bo sach ky thuat ung dung trong marketing", "bo sach ky thuat ung dung _ marketing", "bo sach ky thuat ung dung cuu marketing", "bo sach ky thuat dung dung tri marketing", "bo sach ky thuat hung dung tri marketing", "bo sach ky thuat xung dung tri marketing", "bo sach ky thuat ung dung tai marketing", "bo sach ky thuat ung dung tren marketing", "bo sach ky thuat ung dung sai marketing", "co sach ky thuat ung dung tri marketing", "hoc sach ky thuat ung dung tri marketing", "bo sac ky thuat ung dung tri marketing", "bo sach y thuat ung dung tri marketing", "bo sach ty thuat ung dung tri 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 ky thuat ung dung tri marketing") or ("cuon sach ki thuat ung dung tvqg marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("bo sach ky thuat ung dung tri marketing") OR ("cuon sach ki thuat ung dung tvqg marketing"))*.
• Removing quotes may allow a broader search: (( bo sach ky thuat ung dung tri marketing ) or ( cuon sach ki thuat ung dung tvqg marketing ))*.