Perhaps you should try some spelling variations:
"query processing algorithm" » "pre processing algorithm" (Expand Search)
"element mesh algorithm" » "element best algorithm" (Expand Search), "element mean algorithm" (Expand Search), "element means algorithm" (Expand Search), "element method algorithm" (Expand Search)
"elements rl algorithms" » "elements ml algorithms" (Expand Search), "elements art algorithms" (Expand Search), "elements all algorithms" (Expand Search), "elements ree algorithms" (Expand Search), "elements res algorithms" (Expand Search), "elements _ algorithms" (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: (((("element mesh algorithm") OR ("elements rl algorithms"))) OR ("query processing algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element mesh algorithm\") OR (\"elements rl algorithms\"))) OR (\"query processing algorithm\"))".
• Removing quotes may allow a broader search: (((( element mesh algorithm ) OR ( elements rl algorithms ))) OR ( query processing algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element mesh algorithm") OR ("elements rl algorithms"))) OR ("query processing algorithm"))*.