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