Perhaps you should try some spelling variations:
"signal processing algorithm" » "signal modeling algorithm" (Expand Search), "signal routing algorithm" (Expand Search), "signal tracking algorithm" (Expand Search)
"image processing algorithm" » "image modeling algorithm" (Expand Search), "image routing algorithm" (Expand Search), "image tracking algorithm" (Expand Search)
"element te algorithm" » "element tide algorithm" (Expand Search), "element new algorithm" (Expand Search), "element de algorithms" (Expand Search), "element _ algorithm" (Expand Search), "element g algorithm" (Expand Search), "element data 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: (((("signal processing algorithm") OR ("image processing algorithm"))) OR ("element te algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"signal processing algorithm\") OR (\"image processing algorithm\"))) OR (\"element te algorithm\"))".
• Removing quotes may allow a broader search: (((( signal processing algorithm ) OR ( image processing algorithm ))) OR ( element te algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("signal processing algorithm") OR ("image processing algorithm"))) OR ("element te algorithm"))*.