Perhaps you should try some spelling variations:
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level finding algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using algorithm" (Expand Search)
"element cnn algorithm" » "element mean algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search)
"element based algorithm" » "engagement based 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 cnn algorithm\") OR (((\"element based algorithm\") OR (\"level coding algorithm\"))))~".
• Removing quotes may allow a broader search: (( element cnn algorithm ) OR ((( element based algorithm ) OR ( level coding algorithm ))))~.
• Adding a wildcard symbol may retrieve word variants: (("element cnn algorithm") OR ((("element based algorithm") OR ("level coding algorithm"))))*.