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