Perhaps you should try some spelling variations:
"linac camera level optimization algorithm" » "linac camera global optimization algorithm" (Expand Search), "linac camera model optimization algorithm" (Expand Search)
"binary base based optimization algorithm" » "binary case cased 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 base based optimization algorithm") OR ("linac camera level optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"binary base based optimization algorithm\") OR (\"linac camera level optimization algorithm\"))*".
• Removing quotes may allow a broader search: (( binary base based optimization algorithm ) OR ( linac camera level optimization algorithm ))*.