Perhaps you should try some spelling variations:
trinh marketing » tri marketing
trong marketing » tri marketing, tvqg marketing
dung trinh » dung tinh, dong trinh, dung trich
thuat ung » thuat dung, thuat hung, thuat xung
song dung » song duong, cong dung, song dong
ty thuat » ky thuat, my thuat, te thuat
hoc dinh » hoc sinh, hoc kinh, hoc danh
ly thuat » ky thuat, my thuat, ly thuyet
bo sach » co sach, hoc sach
sach ty » sach y, sach tu, sach thu
dinh ly » sinh ly, dinh le, trinh ly

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( bo sach ty thuat ung dung trong marketing ) or ( hoc dinh ly thuat song dung trinh marketing ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( bo sach ty thuat ung dung trong marketing ) OR ( hoc dinh ly thuat song dung trinh marketing )).
• Adding a wildcard symbol may retrieve word variants: (( bo sach ty thuat ung dung trong marketing ) or ( hoc dinh ly thuat song dung trinh marketing ))*.