Perhaps you should try some spelling variations:
"implement routing algorithm" » "implement routine algorithm" (Expand Search), "implement modeling algorithm" (Expand Search), "implement finding algorithm" (Expand Search), "implement making algorithm" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level finding algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using algorithm" (Expand Search)
"element best algorithm" » "element forest algorithm" (Expand Search), "element based algorithm" (Expand Search), "element new algorithm" (Expand Search), "element mesh algorithm" (Expand Search), "element te algorithm" (Expand Search), "element fbe 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: (((("implement routing algorithm") OR ("element best algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"implement routing algorithm\") OR (\"element best algorithm\"))) OR (\"level coding algorithm\"))".
• Removing quotes may allow a broader search: (((( implement routing algorithm ) OR ( element best algorithm ))) OR ( level coding algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("implement routing algorithm") OR ("element best algorithm"))) OR ("level coding algorithm"))*.