Perhaps you should try some spelling variations:
mari belajar » hasil belajar
seri belajar » teori belajar, cara belajar
usaha dini » usaha tani, usaha dan, usaha di
belajar al » belajar dan, belajar di, belajar dalam
salam usia » dalam usia, salam nusa, saat usia
anak lama » anak dlama, anak selama, anak mamak
al salam » _ salam
usia di » dunia di, mulia di

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( mari belajar anak lama ((usaha dini) OR (usia dini)) ) or ( seri belajar al salam usia di ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( mari belajar anak lama ((usaha dini) OR (usia dini)) ) OR ( seri belajar al salam usia di )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( mari belajar anak lama ((usaha dini) OR (usia dini)) ) or ( seri belajar al salam usia di ))".
• Adding a wildcard symbol may retrieve word variants: (( mari belajar anak lama ((usaha dini) OR (usia dini)) ) or ( seri belajar al salam usia di ))*.