Perhaps you should try some spelling variations:
"image processing algorithm" » "image routing algorithm" (Expand Search), "image tracking algorithm" (Expand Search), "image boosting algorithm" (Expand Search)
"cloud modeling algorithm" » "cloud making algorithm" (Expand Search), "flood modeling algorithm" (Expand Search), "cloud model algorithm" (Expand Search), "flow modeling algorithm" (Expand Search)
"element based algorithm" » "engagement based 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: (((("image processing algorithm") OR ("cloud modeling algorithm"))) OR ("element based algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"image processing algorithm\") OR (\"cloud modeling algorithm\"))) OR (\"element based algorithm\"))".
• Removing quotes may allow a broader search: (((( image processing algorithm ) OR ( cloud modeling algorithm ))) OR ( element based algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("image processing algorithm") OR ("cloud modeling algorithm"))) OR ("element based algorithm"))*.