Perhaps you should try some spelling variations:
"coder coding open problems problem" » "coder coding open problemas problem" (Expand search), "coder coding open problems problems" (Expand search), "coder coding open problemas problema" (Expand search), "coder coding on problems problem" (Expand search), "modern coding open problems problem" (Expand search), "color coding open problems problem" (Expand search), "odor coding open problems problem" (Expand search), "coder coating open problems problem" (Expand search), "coder coding over problems problem" (Expand search), "coder codigo open problems 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding open problems problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coding open problems problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coding open problems problem") OR ("api python python python programming"))*.