Perhaps you should try some spelling variations:
"Hilbert's tenth problem" » "Hilbert's tenti problem", "Hilbert's tent problem", "Hilbert's teeth problem"
"Hilbert's benth problems" » "Hilbert's beth problems", "Hilbert's bento problems", "Hilbert's bent problems"
"Hilbert's bench problems" » "Hilbert's berch problems", "Hilbert's beach problems", "Hilbert's bunch problems"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Hilbert's tenth problem\") OR (((\"Hilbert's benth problems\") OR (\"Hilbert's bench problems\"))))~".
• Removing quotes may allow a broader search: (( Hilbert's tenth problem ) OR ((( Hilbert's benth problems ) OR ( Hilbert's bench problems ))))~.
• Adding a wildcard symbol may retrieve word variants: (("Hilbert's tenth problem") OR ((("Hilbert's benth problems") OR ("Hilbert's bench problems"))))*.