Perhaps you should try some spelling variations:
teori belajar » mari belajar
mutu sekolah » putus sekolah, guru sekolah, luar sekolah
sekolah buku » sekolah bos
remaja mutu » remaja putus, remaja buku, remaja putra
menurut kh » menurut al
buku di » buku ii, buku i, buku iii
kh 4 » ke 4, kh a, kh m

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: (( teori belajar _ menurut kh 4 ) OR ( fiksi remaja mutu sekolah buku di ))~.
• Adding a wildcard symbol may retrieve word variants: (( teori belajar _ menurut kh 4 ) or ( fiksi remaja mutu sekolah buku di ))*.