Perhaps you should try some spelling variations:
"implement routine algorithm" » "implement cosine algorithm" (Expand Search)
"element ii algorithm" » "element rd algorithm" (Expand Search), "element _ algorithms" (Expand Search), "elements ii algorithm" (Expand Search)
"element mapping algorithm" » "elements mapping algorithm" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element ii algorithm\") OR (((\"element mapping algorithm\") OR (\"implement routine algorithm\"))))~".
• Removing quotes may allow a broader search: (( element ii algorithm ) OR ((( element mapping algorithm ) OR ( implement routine algorithm ))))~.
• Adding a wildcard symbol may retrieve word variants: (("element ii algorithm") OR ((("element mapping algorithm") OR ("implement routine algorithm"))))*.