Perhaps you should try some spelling variations:
materi pelaksanaan » strategi pelaksanaan, materi pelajaran, aturan pelaksanaan
pelaksanaan pidana » pelaksanaan undang, pelaksanaan dan, pelaksanaan biaya
pegawai obat » pengawas obat, sebagai obat, pegawai bni
ayo belajar » mari belajar
belajar cat » belajar cepat, belajar mata, belajar cara

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 pelaksanaan pidana pegawai obat 13 ) OR ( ayo belajar cat minyak bumi dan ))~.
• Adding a wildcard symbol may retrieve word variants: (( materi pelaksanaan pidana pegawai obat 13 ) or ( ayo belajar cat minyak bumi dan ))*.