Perhaps you should try some spelling variations:
"sirri telaah dan pengembangan wali songo" » "sirri telaah dan pengembangan al songo", "sirri telaah dan pengembangan sapi songo", "sirri telaah dan pengembangan wakaf songo", "bisri telaah dan pengembangan wali songo", "asyari telaah dan pengembangan wali songo", "sirri setelah dan pengembangan wali songo", "sirri telaah al pengembangan wali songo", "sirri telaah ulang pengembangan wali songo", "sirri telaah maani pengembangan wali songo"
"seri teladan dan perjuangan wali songoa" » "seri teladan dan keuangan wali songoa", "seri teladan dan perkembangan wali songoa", "cerita teladan dan perjuangan wali songoa", "seri teladan dari perjuangan wali songoa", "seri teladan sang perjuangan wali songoa", "seri teladan di perjuangan wali songoa", "seri teladan dan perjuangan wali sanga"

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: (("sirri telaah dan pengembangan wali songo") or ("seri teladan dan perjuangan wali songoa"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("sirri telaah dan pengembangan wali songo") OR ("seri teladan dan perjuangan wali songoa")).
• Removing quotes may allow a broader search: (( sirri telaah dan pengembangan wali songo ) or ( seri teladan dan perjuangan wali songoa )).
• Adding a wildcard symbol may retrieve word variants: (("sirri telaah dan pengembangan wali songo") or ("seri teladan dan perjuangan wali songoa"))*.