Perhaps you should try some spelling variations:
"first graph sparsification document" » "first graph classification document", "first graph clarification document", "first graph specification documents", "first graphs specification document", "first graph modification document", "first grade sparsification document", "first grand sparsification document"
"first graphical specification document" » "first technical specification document", "first empirical specification document", "first hierarchical specifications document", "first graphical classification document", "first graphical specification driven", "first graphical specific document", "fast graphical specification document", "format graphical specification document", "first practical specification document", "first gradeical specification document", "first grandical specification document"

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: (("first graph sparsification document") OR ("first graphical specification document")).
• Removing quotes may allow a broader search: (( first graph sparsification document ) or ( first graphical specification document )).
• Adding a wildcard symbol may retrieve word variants: (("first graph sparsification document") or ("first graphical specification document"))*.