Perhaps you should try some spelling variations:
tenth » tent, teeth, tench
benth » beth, bento, bench
problem » problema, problemas
problems » problemas, problemass, problema
problemasa » problemaasa, problemasasa, problemas, problema, problemes
problemaasa » problemaaasa, problemasaasa, problemas, problematica, problematiza

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