Perhaps you should try some spelling variations:
"binary _ structure optimization algorithm" » "binary _ structural optimization algorithm" (Expand Search)
"binary mapk based optimization algorithm" » "binary map based optimization algorithm" (Expand Search), "binary maps based optimization algorithm" (Expand Search), "binary mark based 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 _ structure optimization algorithm") OR ("binary mapk based optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"binary _ structure optimization algorithm\") OR (\"binary mapk based optimization algorithm\"))*".
• Removing quotes may allow a broader search: (( binary _ structure optimization algorithm ) OR ( binary mapk based optimization algorithm ))*.