Perhaps you should try some spelling variations:
"bolus tracking algorithm" » "bolus tracking algorithms" (Expand Search), "bolus training algorithms" (Expand Search), "bolus making algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search), "elements method algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural modeling algorithm" (Expand Search), "neural finding algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("element method algorithm") OR ("bolus tracking algorithm"))) OR ("neural coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element method algorithm\") OR (\"bolus tracking algorithm\"))) OR (\"neural coding algorithm\"))".
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