Perhaps you should try some spelling variations:
seri belajar » teori belajar, cara belajar
mari belajar » hasil belajar
muda sahabat » mitra sahabat, para sahabat, tiga sahabat
belajar aba » belajar anak, belajar mata, belajar baca
dua sahabat » dan sahabat, para sahabat, tiga sahabat
aba tetap » agar tetap, anda tetap, mata tetap
tetap dan » cetak dan, atap dan, ketan dan
dan rina » dan riba, dan ria, dan rika

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: (( seri belajar aba tetap dan rina ) OR ( mari belajar ((muda sahabat) OR (dua sahabat)) pena _ ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( seri belajar aba tetap dan rina ) or ( mari belajar ((muda sahabat) OR (dua sahabat)) pena _ ))~".
• Adding a wildcard symbol may retrieve word variants: (( seri belajar aba tetap dan rina ) or ( mari belajar ((muda sahabat) OR (dua sahabat)) pena _ ))*.