Perhaps you should try some spelling variations:
trong marketing » tri marketing, tvqg marketing
thuyet ung » thuyet dung, thuyet hung, thuyet luong
li thuyet » ly thuyet
doi thuat » khoi thuat, ki thuat, doi thu
thuat ung » thuat dung, thuat hung, thuat xung
sach doi » sach hoi, sach moi, sach dao
co sach » cuon sach, hoc sach
sach li » sach lo, sach bai, sach hoi
bo sach » hoc sach

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