Perhaps you should try some spelling variations:
sahabat dunia » sahabat dari, sahabat pena
mari belajar » hasil belajar
seri belajar » teori belajar, cara belajar
belajar dan » belajar mata
dan sahabat » para sahabat
anak tetap » anak terapi, agar tetap, anda tetap

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 bina) dini ) OR ( mari belajar dan sahabat dunia 4 ))~.
• Adding a wildcard symbol may retrieve word variants: (( seri belajar anak tetap (tina or bina) dini ) or ( mari belajar dan sahabat dunia 4 ))*.