Perhaps you should try some spelling variations:
"antigen processing algorithm" » "antigen modeling algorithm" (Expand Search), "antigen routing algorithm" (Expand Search), "antigen tracking algorithm" (Expand Search), "time processing algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)
"element data algorithm" » "element data algorithms" (Expand Search), "element update algorithm" (Expand Search), "element atlas algorithm" (Expand Search), "settlement data algorithm" (Expand Search), "relevant data algorithm" (Expand Search), "movement data 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 data algorithm") OR ((("antigen processing algorithm") OR ("neural coding algorithm"))))~.
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• Removing quotes may allow a broader search: (( element data algorithm ) OR ((( antigen processing algorithm ) OR ( neural coding algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element data algorithm") OR ((("antigen processing algorithm") OR ("neural coding algorithm"))))*.