Perhaps you should try some spelling variations:
"primary data model optimization algorithm" » "primary data level optimization algorithm" (Expand Search), "primary data motor optimization algorithm" (Expand Search), "primary data monkey optimizations algorithm" (Expand Search), "primary data models optimization algorithm" (Expand Search)
"binary basic robust optimization algorithm" » "binary basis robust optimization algorithm" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("binary basic robust optimization algorithm") OR ("primary data model optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"binary basic robust optimization algorithm\") OR (\"primary data model optimization algorithm\"))*".
• Removing quotes may allow a broader search: (( binary basic robust optimization algorithm ) OR ( primary data model optimization algorithm ))*.