Perhaps you should try some spelling variations:
"agent learning algorithm" » "agent learning algorithms" (Expand Search), "student learning algorithm" (Expand Search)
"element tree algorithms" » "element three algorithms" (Expand Search), "element other algorithms" (Expand Search), "element art algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element te algorithms" (Expand Search), "elements ree algorithms" (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)

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

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