Perhaps you should try some spelling variations:
trong marketing » tvqg marketing
tri marketing » tvqg marketing, _ marketing, cuu marketing
thuat dung » thuat hung, thuat ung, thuat xung
kxy thuat » ky thuat, my thuat, ky thua
dung dung » ung dung, dung ung, dung dong
sach kxy » sach xa, sach kem, sac ky
ki thuat » ky thuat
cong tri » cong ti, dong tri, cong tai
co sach » cuon sach, hoc sach
bo sach » hoc sach
sach ki » sach kinh, sach bai, sach kem

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 kxy thuat dung dung trong marketing ) or ( bo sach ki thuat dung cong tri marketing ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( co sach kxy thuat dung dung trong marketing ) OR ( bo sach ki thuat dung cong tri marketing )).
• Adding a wildcard symbol may retrieve word variants: (( co sach kxy thuat dung dung trong marketing ) or ( bo sach ki thuat dung cong tri marketing ))*.