Perhaps you should try some spelling variations:
"intent routing algorithm" » "intent cosine algorithm" (Expand Search), "internet routing algorithm" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level colony algorithm" (Expand Search), "level scheduling algorithm" (Expand Search)
"elements box algorithm" » "elements rd algorithm" (Expand Search), "elements _ 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: (((("intent routing algorithm") OR ("elements box algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"intent routing algorithm\") OR (\"elements box algorithm\"))) OR (\"level coding algorithm\"))".
• Removing quotes may allow a broader search: (((( intent routing algorithm ) OR ( elements box algorithm ))) OR ( level coding algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("intent routing algorithm") OR ("elements box algorithm"))) OR ("level coding algorithm"))*.