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 hung dung trong marketing", "hoc sach ki thuat xung 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 ki thuat cung dung trong marketing" » "hoc cac ki thuat cung dung tri marketing", "hoc cac ki thuat cung dung tvqg marketing", "hoc cac ki thuat chung dung trong marketing", "hoc cac ki thuat cong dung trong marketing", "hoc cac ki thuat dung dung trong marketing", "hoc cac ki thuat cuong dung trong marketing", "hoc cac ki thuat cung ung trong marketing", "hoc cac ky thuat cung dung trong marketing", "hoc cao ki thuat cung dung trong marketing", "hoc cac khi thuat cung dung trong marketing", "hoc cac vi thuat cung 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 ki thuat cung 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 ki thuat cung dung trong marketing")).
• Removing quotes may allow a broader search: (( hoc sach ki thuat ung dung trong marketing ) or ( hoc cac ki thuat cung dung trong marketing )).
• Adding a wildcard symbol may retrieve word variants: (("hoc sach ki thuat ung dung trong marketing") or ("hoc cac ki thuat cung dung trong marketing"))*.