Perhaps you should try some spelling variations:
"present mining algorithm" » "present finding algorithm" (Expand Search), "present making algorithm" (Expand Search), "present training algorithms" (Expand Search), "present binding algorithm" (Expand Search), "present findings algorithm" (Expand Search), "present during algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)
"element rl algorithm" » "element rl algorithms" (Expand Search), "element rf algorithm" (Expand Search), "element ml algorithms" (Expand Search), "element ore algorithm" (Expand Search), "element ree algorithm" (Expand Search), "element _ 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 rl algorithm") OR ((("present mining algorithm") OR ("neural coding algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element rl algorithm\") OR (((\"present mining algorithm\") OR (\"neural coding algorithm\"))))".
• Removing quotes may allow a broader search: (( element rl algorithm ) OR ((( present mining algorithm ) OR ( neural coding algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element rl algorithm") OR ((("present mining algorithm") OR ("neural coding algorithm"))))*.