Perhaps you should try some spelling variations:
"coder precoder coverage radio programming" » "coder code coverage radio programming" (Expand search), "coder precoder coverage radio programas" (Expand search), "coder precoder coverage and programming" (Expand search), "coder precoder coverage to programming" (Expand search), "coder decoder coverage radio programming" (Expand search), "coder precoder coverage ratio programming" (Expand search), "coder precoder coverage brazil programming" (Expand search), "coder precoder coverage region programming" (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 precoder coverage radio programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder coverage radio programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder coverage radio programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder coverage radio programming") OR ("api python python python programming"))*.