Perhaps you should try some spelling variations:
"co chu ky thuat hung dung tren marketing" » "co chu ky thuat hung dung trong marketing", "co chu ky thuat hung dung trinh marketing", "co chu ky thuat hung dung thien marketing", "co chu ky thuat dung dung tren marketing", "co chu ky thuat ung dung tren marketing", "co chu ky thuat chuong dung tren marketing", "co chu ky thuat nhung dung tren marketing", "co chu ky thuat phung dung tren marketing", "co chu ky thuat hung dung trung marketing", "cho chu ky thuat hung dung tren marketing", "cao chu ky thuat hung dung tren marketing", "co che ky thuat hung dung tren marketing"
"co sach ky thuat xung dung tri marketing" » "co sach ky thuat xung dung trong marketing", "co sach ky thuat xung dung tvqg marketing", "co sach ky thuat xung dung _ marketing", "co sach ky thuat dung dung tri marketing", "co sach ky thuat ung dung tri marketing", "co sach ky thuat song dung tri marketing", "co sach ky thuat cung dung tri marketing", "co sach ky thuat xung dung tai marketing", "co sach ky thuat xung dung sai marketing", "co sach ky thuat xung dung doi marketing", "bo sach ky thuat xung dung tri marketing", "cuon sach ky thuat xung dung tri marketing", "hoc sach ky thuat xung dung tri marketing", "co sac ky thuat xung dung tri marketing", "co sach y thuat xung dung tri marketing", "co sach ty thuat xung dung tri 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: (("co sach ky thuat xung dung tri marketing") OR ("co chu ky thuat hung dung tren marketing"))~.
• Removing quotes may allow a broader search: (( co sach ky thuat xung dung tri marketing ) or ( co chu ky thuat hung dung tren marketing ))~.
• Adding a wildcard symbol may retrieve word variants: (("co sach ky thuat xung dung tri marketing") or ("co chu ky thuat hung dung tren marketing"))*.