Perhaps you should try some spelling variations:
"and optimization python python programming" » "and optimization method python programming" (Expand search), "and optimization option python programming" (Expand search), "and optimization methods python programming" (Expand search), "and optimization pythons python programming" (Expand search), "and optimization piton python programming" (Expand search), "and optimization pitons python programming" (Expand search)
"coder location problems coding program" » "coder location problem coding program" (Expand search), "coder allocation problem coding program" (Expand search), "coder location problems posing program" (Expand search), "coder location problems moving program" (Expand search), "coder location problems according program" (Expand search), "model location problems coding program" (Expand search), "over location problems coding program" (Expand search), "under location problems coding program" (Expand search), "coder location problems cloning program" (Expand search), "coder location problems loading program" (Expand search), "coder location problems cooling programs" (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: "((\"coder location problems coding program\") OR (\"and optimization python python programming\"))~".
• Removing quotes may allow a broader search: (( coder location problems coding program ) OR ( and optimization python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder location problems coding program") OR ("and optimization python python programming"))*.