Perhaps you should try some spelling variations:
"algorithm python function" » "algorithm within function" (Expand Search), "algorithms within function" (Expand Search), "algorithm protein function" (Expand Search)
"algorithm both function" » "algorithm blood function" (Expand Search), "algorithm b function" (Expand Search), "algorithm etc function" (Expand Search), "algorithm body function" (Expand Search), "algorithm growth function" (Expand Search), "algorithm beach function" (Expand Search)
"algorithm a function" » "algorithms a function" (Expand Search), "algorithm _ function" (Expand Search), "algorithm b function" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("algorithm python function") OR ("algorithm both function"))) OR ("algorithm a function"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"algorithm python function\") OR (\"algorithm both function\"))) OR (\"algorithm a function\"))".
• Removing quotes may allow a broader search: (((( algorithm python function ) OR ( algorithm both function ))) OR ( algorithm a function )).
• Adding a wildcard symbol may retrieve word variants: (((("algorithm python function") OR ("algorithm both function"))) OR ("algorithm a function"))*.