Perhaps you should try some spelling variations:
complex optimization » convex optimization (Expand Search), wolf optimization (Expand Search), codon optimization (Expand Search)
whale optimization » swarm optimization (Expand Search)
based complex » layer complex (Expand Search)
image whale » image scale (Expand Search)
linac based » lines based (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 image whale optimization algorithm ) OR ( linac based complex optimization algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( binary image whale optimization algorithm ) OR ( linac based complex optimization algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( binary image whale optimization algorithm ) OR ( linac based complex optimization algorithm ))*.