Perhaps you should try some spelling variations:
"data tracking algorithm" » "data tracking algorithms" (Expand Search), "data training algorithms" (Expand Search), "data making algorithm" (Expand Search), "path tracking algorithm" (Expand Search), "data backing algorithm" (Expand Search), "uav tracking algorithm" (Expand Search)
"elements tree algorithms" » "elements three algorithms" (Expand Search), "elements art algorithms" (Expand Search), "elements two algorithms" (Expand Search), "elements ree algorithms" (Expand Search), "element ree algorithms" (Expand Search), "elements res algorithms" (Expand Search)
"relevant data algorithm" » "relevant data algorithms" (Expand Search), "relevant update algorithm" (Expand Search), "relevant atlas algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("data tracking algorithm") OR ((("relevant data algorithm") OR ("elements tree algorithms"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"data tracking algorithm\") OR (((\"relevant data algorithm\") OR (\"elements tree algorithms\"))))".
• Removing quotes may allow a broader search: (( data tracking algorithm ) OR ((( relevant data algorithm ) OR ( elements tree algorithms )))).
• Adding a wildcard symbol may retrieve word variants: (("data tracking algorithm") OR ((("relevant data algorithm") OR ("elements tree algorithms"))))*.