Perhaps you should try some spelling variations:
"hoc sach ki thuat ung dung trong marketing" » "hoc sach ki thuat ung dung tri marketing", "hoc sach ki thuat ung dung tvqg marketing", "hoc sach ki thuat dung dung trong marketing", "hoc sach ki thuat xung dung trong marketing", "hoc sach ki thuat song dung trong marketing", "hoc sinh ki thuat ung dung trong marketing", "hoc anh ki thuat ung dung trong marketing", "hoc sach ky thuat ung dung trong marketing", "hoc sach kinh thuat ung dung trong marketing", "hoc sach bai thuat ung dung trong marketing", "hoc sach kem thuat ung dung trong marketing"
"hoc cac vi thuat hung dung trong marketing" » "hoc cac vi thuat hung dung tri marketing", "hoc cac vi thuat hung dung tvqg marketing", "hoc cac vi thuat dung dung trong marketing", "hoc cac vi thuat xung dung trong marketing", "hoc cac vi thuat chuong dung trong marketing", "hoc cac vi thuat nhung dung trong marketing", "hoc cac vi thuat phung dung trong marketing", "hoc cac va thuat hung dung trong marketing", "hoc cac mi thuat hung dung trong marketing", "hoc cac ve thuat hung dung trong marketing", "hoc cao vi thuat hung dung trong 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: (("hoc sach ki thuat ung dung trong marketing") or ("hoc cac vi thuat hung dung trong marketing"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("hoc sach ki thuat ung dung trong marketing") OR ("hoc cac vi thuat hung dung trong marketing")).
• Removing quotes may allow a broader search: (( hoc sach ki thuat ung dung trong marketing ) or ( hoc cac vi thuat hung dung trong marketing )).
• Adding a wildcard symbol may retrieve word variants: (("hoc sach ki thuat ung dung trong marketing") or ("hoc cac vi thuat hung dung trong marketing"))*.