Perhaps you should try some spelling variations:
"experiments using algorithm" » "experiments cosine algorithm" (Expand Search)
"level using algorithm" » "level cosine algorithm" (Expand Search), "level fusion algorithm" (Expand Search)
"elements uce algorithm" » "elements deer algorithm" (Expand Search), "elements rd algorithm" (Expand Search), "elements _ 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: (((("elements uce algorithm") OR ("experiments using algorithm"))) OR ("level using algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"elements uce algorithm\") OR (\"experiments using algorithm\"))) OR (\"level using algorithm\"))".
• Removing quotes may allow a broader search: (((( elements uce algorithm ) OR ( experiments using algorithm ))) OR ( level using algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("elements uce algorithm") OR ("experiments using algorithm"))) OR ("level using algorithm"))*.