Perhaps you should try some spelling variations:
"elements mapping algorithm" » "elements sampling algorithm" (Expand Search), "elements matching algorithm" (Expand Search), "elements mining algorithm" (Expand Search), "element mapping algorithm" (Expand Search), "elemental mapping algorithm" (Expand Search), "elements during algorithm" (Expand Search)
"client learner algorithm" » "client learning algorithm" (Expand Search), "client learning algorithms" (Expand Search), "client search algorithm" (Expand Search), "client server algorithm" (Expand Search)
"client needs algorithm" » "client means algorithm" (Expand Search), "client new algorithm" (Expand Search), "client leiden algorithm" (Expand Search), "china needs algorithm" (Expand Search), "urgent needs 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 mapping algorithm") OR ((("client needs algorithm") OR ("client learner algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"elements mapping algorithm\") OR (((\"client needs algorithm\") OR (\"client learner algorithm\"))))".
• Removing quotes may allow a broader search: (( elements mapping algorithm ) OR ((( client needs algorithm ) OR ( client learner algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("elements mapping algorithm") OR ((("client needs algorithm") OR ("client learner algorithm"))))*.