Perhaps you should try some spelling variations:
"student learning algorithm" » "student learning algorithms" (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 em algorithm" » "element new algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element _ algorithms" (Expand Search), "element ree algorithm" (Expand Search), "element te 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: (("student learning algorithm") OR ((("element tree algorithms") OR ("element em algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"student learning algorithm\") OR (((\"element tree algorithms\") OR (\"element em algorithm\"))))".
• Removing quotes may allow a broader search: (( student learning algorithm ) OR ((( element tree algorithms ) OR ( element em algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("student learning algorithm") OR ((("element tree algorithms") OR ("element em algorithm"))))*.