Perhaps you should try some spelling variations:
"elements matching algorithm" » "elements mining algorithm" (Expand Search), "elements sampling algorithm" (Expand Search), "elements tracking algorithm" (Expand Search), "elements within algorithm" (Expand Search), "element mapping 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" » "urgent means algorithm" (Expand Search), "urgent new algorithm" (Expand Search), "urgent leiden algorithm" (Expand Search), "urgent need algorithm" (Expand Search), "unmet needs algorithm" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"client needs algorithm\") OR (\"urgent needs algorithm\"))) OR (\"elements matching algorithm\"))~".
• Removing quotes may allow a broader search: (((( client needs algorithm ) OR ( urgent needs algorithm ))) OR ( elements matching algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (((("client needs algorithm") OR ("urgent needs algorithm"))) OR ("elements matching algorithm"))*.