Perhaps you should try some spelling variations:
"implement routing algorithm" » "implement cosine algorithm" (Expand Search), "implemented routing algorithm" (Expand Search), "implementing routing algorithm" (Expand Search)
"level scheduling algorithm" » "self scheduling algorithm" (Expand Search)
"element te algorithm" » "element rd algorithm" (Expand Search), "element deer algorithm" (Expand Search), "element _ algorithms" (Expand Search), "elementi per 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 te algorithm"))) OR ("level scheduling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"implement routing algorithm\") OR (\"element te algorithm\"))) OR (\"level scheduling algorithm\"))".
• Removing quotes may allow a broader search: (((( implement routing algorithm ) OR ( element te algorithm ))) OR ( level scheduling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("implement routing algorithm") OR ("element te algorithm"))) OR ("level scheduling algorithm"))*.