Perhaps you should try some spelling variations:
model optimization » codon optimization (Expand Search), global optimization (Expand Search), based optimization (Expand Search)
case optimization » based optimization (Expand Search), phase optimization (Expand Search), dose optimization (Expand Search)
primary risk » primary aim (Expand Search), primary role (Expand Search)
binary same » binary image (Expand Search)
same case » base case (Expand Search), rare case (Expand Search), site case (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( primary risk model optimization algorithm ) OR ( binary same case optimization algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( primary risk model optimization algorithm ) OR ( binary same case optimization algorithm ))*.