Perhaps you should try some spelling variations:
"coder and variable string problem" » "coder and variable stirring problem" (Expand search), "coder and variable during problem" (Expand search), "coder and variable stocking problem" (Expand search), "coder and variable sizing problem" (Expand search), "coder and variable rostering problem" (Expand search), "coder and variable sharing problems" (Expand search), "coder _ variable string problem" (Expand search), "code and variable string problem" (Expand search), "codes and variable string problem" (Expand search), "poder and variable string 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 and variable string problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder and variable string problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder and variable string problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder and variable string problem") OR ("api python python python programming"))*.