Perhaps you should try some spelling variations:
seri belajar » teori belajar, mari belajar, cara belajar
merah remaja » moral remaja, masa remaja
belajar dan » belajar anak, belajar mata
sehat usia » sehat mulia, sejak usia, saat usia
usia diri » usia dini, usia di
dunia ii » dunia di, dunia 4, dunia 1

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( merah remaja ((masjid di) OR (masjid al)) dunia ii ) or ( seri belajar dan sehat usia diri ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( merah remaja ((masjid di) OR (masjid al)) dunia ii ) OR ( seri belajar dan sehat usia diri )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( merah remaja ((masjid di) OR (masjid al)) dunia ii ) or ( seri belajar dan sehat usia diri ))".
• Adding a wildcard symbol may retrieve word variants: (( merah remaja ((masjid di) OR (masjid al)) dunia ii ) or ( seri belajar dan sehat usia diri ))*.