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