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