Perhaps you should try some spelling variations:
mari belajar » hasil belajar
seri belajar » teori belajar, cara belajar
belajar hrd » belajar how, belajar ed, belajar hidup
anwar usia » anak usia, awal usia
hrd anwar » ari anwar, drs anwar, r anwar
dan semut » dan sehat
dan tini » dan kini, dan dini, dan tip
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: (( mari belajar hrd anwar usia di ) OR ( seri belajar dan semut dan tini ))~.
• Adding a wildcard symbol may retrieve word variants: (( mari belajar hrd anwar usia di ) or ( seri belajar dan semut dan tini ))*.