Perhaps you should try some spelling variations:
"element sampling algorithm" » "element scheduling algorithm" (Expand Search)
"element custom algorithm" » "element control algorithm" (Expand Search), "element auction algorithm" (Expand Search), "element cosine algorithm" (Expand Search)
"element based algorithm" » "event based 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: (("element sampling algorithm") OR ((("element based algorithm") OR ("element custom algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element sampling algorithm\") OR (((\"element based algorithm\") OR (\"element custom algorithm\"))))".
• Removing quotes may allow a broader search: (( element sampling algorithm ) OR ((( element based algorithm ) OR ( element custom algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element sampling algorithm") OR ((("element based algorithm") OR ("element custom algorithm"))))*.