Perhaps you should try some spelling variations:
"Hilbert's tentih problem" » "Hilbert's tenti problem", "Hilbert's tentiih problem", "Hilbert's textih problem", "Hilbert's testih problem"
"Hilbert's tent problem" » "Hilbert's tenti problem", "Hilbert's text problem", "Hilbert's test problem"
"Hilbert's tenth problems" » "Hilbert's tentih problems", "Hilbert's texth problems", "Hilbert's testh problems", "Hilbert's tenti problems", "Hilbert's benth problems", "Hilbert's teeth problems", "Hilbert's tenth problemas", "Hilbert's tenth problema"

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

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