Perhaps you should try some spelling variations:
"coder duration modulation coding problems" » "coder duration population coding problems" (Expand search), "coder duration modulation welding problems" (Expand search), "coder duration modulation during problems" (Expand search), "coder duration modulation loading problems" (Expand search), "coder duration modulation counting problems" (Expand search), "coder duration modulation covering problems" (Expand search), "power duration modulation coding problems" (Expand search), "order duration modulation coding problems" (Expand search), "longer duration modulation coding problems" (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 duration modulation coding problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder duration modulation coding problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder duration modulation coding problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder duration modulation coding problems") OR ("api python python python programming"))*.