Perhaps you should try some spelling variations:
"seri : melek dasar calistung terintegrasi" » "seri : melek belajar calistung terintegrasi", "seri : melek akasara calistung terintegrasi", "seri : melek aksara calistung terintegrasi"
"seri : peletak dasar calistung terintegrasi" » "seri : peletak belajar calistung terintegrasi"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("seri : melek dasar calistung terintegrasi") OR ("seri : peletak dasar calistung terintegrasi"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"seri : melek dasar calistung terintegrasi\") OR (\"seri : peletak dasar calistung terintegrasi\"))".
• Removing quotes may allow a broader search: (( seri : melek dasar calistung terintegrasi ) OR ( seri : peletak dasar calistung terintegrasi )).
• Adding a wildcard symbol may retrieve word variants: (("seri : melek dasar calistung terintegrasi") OR ("seri : peletak dasar calistung terintegrasi"))*.