Perhaps you should try some spelling variations:
"data scheduling algorithm" » "task scheduling algorithm" (Expand Search), "ahead scheduling algorithm" (Expand Search)
"develop ppo algorithm" » "develop rd algorithm" (Expand Search), "developed ppo algorithm" (Expand Search)
"element update algorithm" » "elements update algorithm" (Expand Search), "element 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: (((("develop ppo algorithm") OR ("element update algorithm"))) OR ("data scheduling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"develop ppo algorithm\") OR (\"element update algorithm\"))) OR (\"data scheduling algorithm\"))".
• Removing quotes may allow a broader search: (((( develop ppo algorithm ) OR ( element update algorithm ))) OR ( data scheduling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("develop ppo algorithm") OR ("element update algorithm"))) OR ("data scheduling algorithm"))*.