Perhaps you should try some spelling variations:
"seri telaah dan tantangan bagi songo" » "seri telaah dan tantangan dan songo", "seri telaah dan tantangan masa songo", "seri teladan dan tantangan bagi songo", "cerai telaah dan tantangan bagi songo", "seri jelajah dan tantangan bagi songo", "seri telaah al tantangan bagi songo", "seri telaah ulang tantangan bagi songo"
"cerita telaah dan keuangan wali songo" » "cerita teladan dan keuangan wali songo", "perdata telaah dan keuangan wali songo", "cerai telaah dan keuangan wali songo", "cerita telaah dan keuangan dari songo", "cerita telaah dan keuangan al songo", "cerita telaah dan perjuangan wali songo", "cerita telaah jasa keuangan wali songo", "cerita telaah al keuangan wali songo", "cerita telaah ulang keuangan wali songo"

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: (("cerita telaah dan keuangan wali songo") OR ("seri telaah dan tantangan bagi songo"))~.
• Removing quotes may allow a broader search: (( cerita telaah dan keuangan wali songo ) or ( seri telaah dan tantangan bagi songo ))~.
• Adding a wildcard symbol may retrieve word variants: (("cerita telaah dan keuangan wali songo") or ("seri telaah dan tantangan bagi songo"))*.