Perhaps you should try some spelling variations:
belajar sosial » belakang sosial, belajar siswa, belajar sosiologi
sosial tenaga » sosial remaja
mari belajar » hasil belajar
tenaga obat » tanaman obat, sebagai obat, tentang obat
bank dunia » dan dunia
pai bank » pad bank, pada bank, bagi bank
obat di » obat dan, obama di, tomat 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: (( mari belajar sosial tenaga obat di ) OR ( teori belajar pai bank dunia dan ))~.
• Adding a wildcard symbol may retrieve word variants: (( mari belajar sosial tenaga obat di ) or ( teori belajar pai bank dunia dan ))*.