Perhaps you should try some spelling variations:
materi belakang » latar belakang, materi belajar, materi gerakan
belakang sosial » gerakan sosial, pelayanan sosial
sosial tenaga » sosial remaja
mari belajar » hasil belajar
tenaga alat » tenaga dalam, sebagai alat
belajar pt » belajar peta, belajar pai, belajar btq
bank dunia » dan dunia
dunia dari » dunia dan
alat di » salat di, adat di, shalat di

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: (( materi belakang sosial tenaga alat di ) OR ( mari belajar pt bank dunia dari ))~.
• Adding a wildcard symbol may retrieve word variants: (( materi belakang sosial tenaga alat di ) or ( mari belajar pt bank dunia dari ))*.