Perhaps you should try some spelling variations:
"coder coder methods optimization problem" » "coder coder method optimization problem" (Expand search), "coder coder methos optimization problem" (Expand search), "coder coder networks optimization problem" (Expand search), "coder coder methods optimization problems" (Expand search), "coder modern methods optimization problem" (Expand search), "coder order methods optimization problem" (Expand search), "coder model methods optimization problem" (Expand search), "coder decoder methods optimization problem" (Expand search), "code code methods optimization problem" (Expand search), "decoder codec methods optimization problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python 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 methods optimization problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder methods optimization problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder methods optimization problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder methods optimization problem") OR ("api python python python programming"))*.