Perhaps you should try some spelling variations:
"select controls algorithm" » "select control algorithm" (Expand Search), "select control algorithms" (Expand Search), "select centrality algorithm" (Expand Search), "selected controls algorithm" (Expand Search)
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level finding algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using algorithm" (Expand Search)
"complement c3 algorithm" » "complement _ algorithm" (Expand Search), "complement 5a algorithm" (Expand Search), "complement low algorithm" (Expand Search), "complement cc3d algorithm" (Expand Search), "complement cnn algorithm" (Expand Search), "complement td3 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: (((("select controls algorithm") OR ("complement c3 algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"select controls algorithm\") OR (\"complement c3 algorithm\"))) OR (\"level coding algorithm\"))".
• Removing quotes may allow a broader search: (((( select controls algorithm ) OR ( complement c3 algorithm ))) OR ( level coding algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("select controls algorithm") OR ("complement c3 algorithm"))) OR ("level coding algorithm"))*.