Perhaps you should try some spelling variations:
"elemental hip algorithm" » "elemental rd algorithm" (Expand Search), "elementary hip algorithm" (Expand Search), "elements hip algorithm" (Expand Search), "elementsal hip algorithm" (Expand Search)
"element ii algorithm" » "element rd algorithm" (Expand Search), "element _ algorithms" (Expand Search), "elements ii algorithm" (Expand Search)
"element mapping algorithm" » "elements mapping algorithm" (Expand Search)

Try widening your search to All Fields.

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