Perhaps you should try some spelling variations:
"call routing algorithm" » "call modeling algorithm" (Expand Search), "call finding algorithm" (Expand Search), "call making algorithm" (Expand Search), "full routine algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)
"element mesh algorithm" » "element best algorithm" (Expand Search), "element mean algorithm" (Expand Search), "element means algorithm" (Expand Search), "element method algorithm" (Expand Search), "elements mges algorithm" (Expand Search), "element te algorithm" (Expand Search)

Try widening your search to All Fields.

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