Perhaps you should try some spelling variations:
"data routing algorithm" » "data cosine algorithm" (Expand Search), "data using algorithm" (Expand Search)
"element method algorithm" » "element mould algorithm" (Expand Search), "elements method algorithm" (Expand Search)
"element mean algorithm" » "element deer algorithm" (Expand Search), "element search algorithm" (Expand Search), "elements mean 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 mean algorithm") OR ("element method algorithm"))) OR ("data routing algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element mean algorithm\") OR (\"element method algorithm\"))) OR (\"data routing algorithm\"))".
• Removing quotes may allow a broader search: (((( element mean algorithm ) OR ( element method algorithm ))) OR ( data routing algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element mean algorithm") OR ("element method algorithm"))) OR ("data routing algorithm"))*.