Perhaps you should try some spelling variations:
"linac caused level optimization algorithm" » "linac caused based optimization algorithm" (Expand Search), "linac cause level optimization algorithm" (Expand Search)
"binary based global optimization algorithm" » "binary wave global 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 based global optimization algorithm") OR ("linac caused level optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"binary based global optimization algorithm\") OR (\"linac caused level optimization algorithm\"))".
• Removing quotes may allow a broader search: (( binary based global optimization algorithm ) OR ( linac caused level optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("binary based global optimization algorithm") OR ("linac caused level optimization algorithm"))*.