Perhaps you should try some spelling variations:
tenth » teeth, tench, texth, testh, kenth
benth » beth, bento, bent
bench » berch, bunch, bence
beach » each, reach, berch
tenti » texti, testi, kenti
tent » text, test, kent
problem » problema, problems
problemas » problemaas, problemsas

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