Perhaps you should try some spelling variations:
kajian pendapat » kajian pendekatan, kajian pengantar
mari belajar » hasil belajar
belajar mata » belajar dan, belajar anak
mata data » mata mata, mata dalam, mata dayak
raja unit » jasa unit, pada unit
data dan » fakta dan
unit dan » unik dan, nanit dan, kulit dan

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: (( mari belajar mata data dan ix ) OR ( kajian pendapat (para OR cara) raja unit dan ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( mari belajar mata data dan ix ) or ( kajian pendapat (para OR cara) raja unit dan ))~".
• Adding a wildcard symbol may retrieve word variants: (( mari belajar mata data dan ix ) or ( kajian pendapat (para OR cara) raja unit dan ))*.