Perhaps you should try some spelling variations:
"client sampling algorithm" » "client mining algorithm" (Expand Search), "sediment sampling algorithm" (Expand Search)
"element cnn algorithm" » "element _ algorithm" (Expand Search), "element new algorithm" (Expand Search), "element em algorithm" (Expand Search)
"elemental ddpg algorithm" » "elements ddpg algorithm" (Expand Search), "elemental ddp algorithm" (Expand Search), "elemental dpg algorithm" (Expand Search), "elemental dopg 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: (((("elemental ddpg algorithm") OR ("element cnn algorithm"))) OR ("client sampling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"elemental ddpg algorithm\") OR (\"element cnn algorithm\"))) OR (\"client sampling algorithm\"))".
• Removing quotes may allow a broader search: (((( elemental ddpg algorithm ) OR ( element cnn algorithm ))) OR ( client sampling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("elemental ddpg algorithm") OR ("element cnn algorithm"))) OR ("client sampling algorithm"))*.