Perhaps you should try some spelling variations:
"pre processing algorithm" » "pre modeling algorithm" (Expand Search), "pre routing algorithm" (Expand Search), "pre tracking algorithm" (Expand Search), "time processing algorithm" (Expand Search), "_ processing algorithm" (Expand Search), "rna processing algorithm" (Expand Search)
"wood processing algorithm" » "wood modeling algorithm" (Expand Search), "wood routing algorithm" (Expand Search), "wood tracking algorithm" (Expand Search), "food processing algorithm" (Expand Search), "good processing algorithm" (Expand Search)
"patient data algorithm" » "patient data algorithms" (Expand Search), "patient update algorithm" (Expand Search), "patient atlas algorithm" (Expand Search), "patient care 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: (((("pre processing algorithm") OR ("wood processing algorithm"))) OR ("patient data algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"pre processing algorithm\") OR (\"wood processing algorithm\"))) OR (\"patient data algorithm\"))".
• Removing quotes may allow a broader search: (((( pre processing algorithm ) OR ( wood processing algorithm ))) OR ( patient data algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("pre processing algorithm") OR ("wood processing algorithm"))) OR ("patient data algorithm"))*.