Perhaps you should try some spelling variations:
"coder coder compositional optimization based" » "coder coder computational optimization based" (Expand search), "coder coder operational optimization based" (Expand search), "coder coder position optimization based" (Expand search), "coder code composition optimization based" (Expand search), "coder meter compositional optimization based" (Expand search), "coder zone compositional optimization based" (Expand search), "coder coder compositional optimization and" (Expand search), "coder decoder compositional optimization based" (Expand search), "code code compositional optimization based" (Expand search), "decoder codec compositional optimization based" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python python programming" (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: (("coder coder compositional optimization based") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder compositional optimization based\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder compositional optimization based ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder compositional optimization based") OR ("_ python python python programming"))*.