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