Perhaps you should try some spelling variations:
"space modeling algorithm" » "space scheduling algorithm" (Expand Search), "spatial modeling algorithm" (Expand Search)
"data routing algorithm" » "data cosine algorithm" (Expand Search), "data using algorithm" (Expand Search)
"element data algorithm" » "element jaya algorithm" (Expand Search), "element deer algorithm" (Expand Search), "elements 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: (((("data routing algorithm") OR ("space modeling algorithm"))) OR ("element data algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"data routing algorithm\") OR (\"space modeling algorithm\"))) OR (\"element data algorithm\"))".
• Removing quotes may allow a broader search: (((( data routing algorithm ) OR ( space modeling algorithm ))) OR ( element data algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("data routing algorithm") OR ("space modeling algorithm"))) OR ("element data algorithm"))*.