Perhaps you should try some spelling variations:
mari belajar » hasil belajar
seri belajar » teori belajar, cara belajar
anak tetap » anak terapi, agar tetap, anda tetap
belajar 12 » belajar di, belajar al, belajar ke
12 sahabat » 1 sahabat, 10 sahabat, 5 sahabat
nabi i » nabi di, nabi ii, nabi 2

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 anak tetap (tina OR tiga) dini ) OR ( mari belajar 12 sahabat nabi i ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( seri belajar anak tetap (tina OR tiga) dini ) or ( mari belajar 12 sahabat nabi i ))~".
• Adding a wildcard symbol may retrieve word variants: (( seri belajar anak tetap (tina OR tiga) dini ) or ( mari belajar 12 sahabat nabi i ))*.