Perhaps you should try some spelling variations:
process optimization » model optimization (Expand Search)
codon optimization » wolf optimization (Expand Search)
based process » based processes (Expand Search), based probes (Expand Search), based proteins (Expand Search)
primary data » primary care (Expand Search)
linac based » lines based (Expand Search)
data codon » data code (Expand Search), data codes (Expand Search), data codings (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 process optimization algorithm ) OR ( primary data codon optimization algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( linac based process optimization algorithm ) OR ( primary data codon optimization algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( linac based process optimization algorithm ) OR ( primary data codon optimization algorithm ))*.