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