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 ml algorithms" » "element _ algorithms" (Expand Search), "element rd algorithm" (Expand Search), "elements ml algorithms" (Expand Search)

Try widening your search to All Fields.

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