Perhaps you should try some spelling variations:
mari belajar » hasil belajar
belajar ilmu » belajar al
seri belajar » teori belajar, cara belajar
ilmu sejak » ilmu pajak, ilmu sejarah
gaya anak » gaya sajak, karya anak, pada anak
usia 4 » usia 3
dini » ini, diri

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 ilmu sejak usia 4 ) or ( seri belajar ((gaya anak) OR (agama anak)) usia dini ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( mari belajar ilmu sejak usia 4 ) OR ( seri belajar ((gaya anak) OR (agama anak)) usia dini )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( mari belajar ilmu sejak usia 4 ) or ( seri belajar ((gaya anak) OR (agama anak)) usia dini ))".
• Adding a wildcard symbol may retrieve word variants: (( mari belajar ilmu sejak usia 4 ) or ( seri belajar ((gaya anak) OR (agama anak)) usia dini ))*.