Perhaps you should try some spelling variations:
"segment detection algorithm" » "event detection algorithm" (Expand Search), "recent detection algorithm" (Expand Search), "defect detection algorithm" (Expand Search)
"element update algorithm" » "element pass algorithm" (Expand Search), "element data algorithms" (Expand Search), "element ipca algorithm" (Expand Search), "element data algorithm" (Expand Search)
"level using algorithm" » "level using algorithms" (Expand Search), "level routing algorithm" (Expand Search), "level fusion algorithm" (Expand Search), "levels using 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: (((("segment detection algorithm") OR ("element update algorithm"))) OR ("level using algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"segment detection algorithm\") OR (\"element update algorithm\"))) OR (\"level using algorithm\"))".
• Removing quotes may allow a broader search: (((( segment detection algorithm ) OR ( element update algorithm ))) OR ( level using algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("segment detection algorithm") OR ("element update algorithm"))) OR ("level using algorithm"))*.