Perhaps you should try some spelling variations:
"data processing algorithm" » "data processing algorithms" (Expand Search)
"image routing algorithm" » "image cosine algorithm" (Expand Search)
"element tree algorithms" » "elements tree algorithms" (Expand Search), "element three algorithms" (Expand Search), "element free algorithms" (Expand Search)

You may be able to get more results by adjusting your search query.

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