Perhaps you should try some spelling variations:
"data processin_ algorithm" » "data processing algorithm" (Expand Search), "data present algorithm" (Expand Search), "data promising algorithms" (Expand Search), "data preprocessing algorithm" (Expand Search), "waste processing algorithm" (Expand Search)
"element tree algorithms" » "element three algorithms" (Expand Search), "element other algorithms" (Expand Search), "element art algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element te algorithms" (Expand Search), "elements ree algorithms" (Expand Search)
"element g algorithm" » "element _ algorithm" (Expand Search), "element b algorithm" (Expand Search), "element gnb algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "element te 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: (((("element tree algorithms") OR ("element g algorithm"))) OR ("data processin_ algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element tree algorithms\") OR (\"element g algorithm\"))) OR (\"data processin_ algorithm\"))".
• Removing quotes may allow a broader search: (((( element tree algorithms ) OR ( element g algorithm ))) OR ( data processin_ algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element tree algorithms") OR ("element g algorithm"))) OR ("data processin_ algorithm"))*.