Perhaps you should try some spelling variations:
"student learning algorithm" » "student learning algorithms" (Expand Search), "students learning algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)
"element tree algorithms" » "element three algorithms" (Expand Search), "element art algorithms" (Expand Search), "element two algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element te algorithms" (Expand Search), "element ore algorithms" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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