Perhaps you should try some spelling variations:
"image 2_restoring algorithm" » "image thresholding algorithm" (Expand Search), "image clustering algorithm" (Expand Search), "image 1_restoring algorithm" (Expand Search), "image 2_exploring algorithm" (Expand Search), "image 2_revealing algorithm" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)
"data using algorithm" » "data using algorithms" (Expand Search), "data routing algorithm" (Expand Search), "data fusion 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: (((("data using algorithm") OR ("image 2_restoring algorithm"))) OR ("element method algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"data using algorithm\") OR (\"image 2_restoring algorithm\"))) OR (\"element method algorithm\"))".
• Removing quotes may allow a broader search: (((( data using algorithm ) OR ( image 2_restoring algorithm ))) OR ( element method algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("data using algorithm") OR ("image 2_restoring algorithm"))) OR ("element method algorithm"))*.