Perhaps you should try some spelling variations:
belajar dalam » belajar dan, belajar anak, belajar dari
seri belajar » teori belajar, mari belajar, cara belajar
surat sosial » strata sosial
sosial dini » sosial edisi, sosial dan, sosial di
belajar al » belajar dan, belajar di, belajar anak
al sejak » sd sejak
usia di » usia dini, dunia di, mulia 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: (( seri belajar dalam surat sosial dini ) OR ( seri belajar al sejak usia di ))~.
• Adding a wildcard symbol may retrieve word variants: (( seri belajar dalam surat sosial dini ) or ( seri belajar al sejak usia di ))*.