Perhaps you should try some spelling variations:
"coder and complexity by problem" » "coder and complexity bru problem" (Expand search), "coder and complexity in problem" (Expand search), "coder and complexity _ problem" (Expand search), "coder and complexity by problems" (Expand search), "coder and complexity ay problem" (Expand search), "coder and complexity my problem" (Expand search), "code and complexity by problem" (Expand search), "codes and complexity by problem" (Expand search), "poder and complexity by 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 and complexity by problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder and complexity by problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder and complexity by problem") OR ("api python python python programming"))*.