Perhaps you should try some spelling variations:
"data routing algorithm" » "data cosine algorithm" (Expand Search), "data using algorithm" (Expand Search)
"element method algorithms" » "elements method algorithms" (Expand Search), "element methods algorithms" (Expand Search)
"element tree algorithms" » "elements tree algorithms" (Expand Search), "element three algorithms" (Expand Search), "element free algorithms" (Expand Search)

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 algorithms") OR ("element tree algorithms"))) OR ("data routing algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element method algorithms\") OR (\"element tree algorithms\"))) OR (\"data routing algorithm\"))".
• Removing quotes may allow a broader search: (((( element method algorithms ) OR ( element tree algorithms ))) OR ( data routing algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element method algorithms") OR ("element tree algorithms"))) OR ("data routing algorithm"))*.