Perhaps you should try some spelling variations:
codon optimization » wolf optimization (Expand Search)
case optimization » based optimization (Expand Search), phase optimization (Expand Search), dose optimization (Expand Search)
linac based » lines based (Expand Search)
binary base » binary mask (Expand Search), ciliary base (Expand Search), binary image (Expand Search)
based case » base case (Expand Search), based cancer (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: (( linac based case optimization algorithm ) OR ( binary base codon optimization algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( linac based case optimization algorithm ) OR ( binary base codon optimization algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( linac based case optimization algorithm ) OR ( binary base codon optimization algorithm ))*.