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