Perhaps you should try some spelling variations:
"improvements based algorithms" » "improvements also algorithms" (Expand Search), "improvements increased algorithms" (Expand Search), "improvements observed algorithms" (Expand Search), "improvements based algorithm" (Expand Search)
"data using algorithm" » "data using algorithms" (Expand Search), "data routing algorithm" (Expand Search), "data fusion algorithm" (Expand Search)
"relevant data algorithm" » "relevant data algorithms" (Expand Search), "relevant update algorithm" (Expand Search), "relevant atlas 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: (((("improvements based algorithms") OR ("relevant data algorithm"))) OR ("data using algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"improvements based algorithms\") OR (\"relevant data algorithm\"))) OR (\"data using algorithm\"))".
• Removing quotes may allow a broader search: (((( improvements based algorithms ) OR ( relevant data algorithm ))) OR ( data using algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("improvements based algorithms") OR ("relevant data algorithm"))) OR ("data using algorithm"))*.