Perhaps you should try some spelling variations:
trong marketing » tri marketing, tvqg marketing
tai marketing » tri marketing, tac marketing, thi marketing
cuon sach » duong sach, cuoc cach, co sach
thuat ung » thuat dung, thuat hung, thuat xung
ty thuat » my thuat, te thuat, thu thuat
sach ty » sach y, sach tu, sach thu
bo sach » co sach, hoc sach
sach ky » sac ky, sach y, 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: (( cuon sach ty thuat ung dung trong marketing ) or ( bo sach ky thuat ung dung tai marketing ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( cuon sach ty thuat ung dung trong marketing ) OR ( bo sach ky thuat ung dung tai marketing )).
• Adding a wildcard symbol may retrieve word variants: (( cuon sach ty thuat ung dung trong marketing ) or ( bo sach ky thuat ung dung tai marketing ))*.