Perhaps you should try some spelling variations:
"element learning algorithm" » "element learning algorithms" (Expand Search), "student learning algorithm" (Expand Search)
"fragment based algorithm" » "agent based algorithm" (Expand Search), "gradient based algorithm" (Expand Search)
"neural colony algorithm" » "neural colon algorithm" (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: (("element learning algorithm") OR ((("fragment based algorithm") OR ("neural colony algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element learning algorithm\") OR (((\"fragment based algorithm\") OR (\"neural colony algorithm\"))))".
• Removing quotes may allow a broader search: (( element learning algorithm ) OR ((( fragment based algorithm ) OR ( neural colony algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element learning algorithm") OR ((("fragment based algorithm") OR ("neural colony algorithm"))))*.