Perhaps you should try some spelling variations:
"improvements using algorithms" » "improvements cosine algorithm" (Expand Search), "improvements cosine algorithms" (Expand Search), "improvement using algorithms" (Expand Search)
"data using algorithm" » "data cosine 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.

You may be able to get more results by adjusting your search query.

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