Perhaps you should try some spelling variations:
"coder coder basic mathematical problem" » "coder coder basic mathematics problem" (Expand search), "coder coder and mathematical problem" (Expand search), "coder coder didactic mathematical problem" (Expand search), "coder decoder basic mathematical problem" (Expand search), "code code basic mathematical problem" (Expand search), "decoder codec basic mathematical problem" (Expand search), "coder model basic mathematical problem" (Expand search), "coder under basic mathematical 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)

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