Perhaps you should try some spelling variations:
"experiments based algorithm" » "experiments showed algorithm" (Expand Search), "experimental basis algorithm" (Expand Search), "experimental case algorithm" (Expand Search)
"data backing algorithm" » "data tracking algorithm" (Expand Search), "data making algorithm" (Expand Search), "data tracking algorithms" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search), "elements method 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 method algorithm") OR ("experiments based algorithm"))) OR ("data backing algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element method algorithm\") OR (\"experiments based algorithm\"))) OR (\"data backing algorithm\"))".
• Removing quotes may allow a broader search: (((( element method algorithm ) OR ( experiments based algorithm ))) OR ( data backing algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element method algorithm") OR ("experiments based algorithm"))) OR ("data backing algorithm"))*.