Perhaps you should try some spelling variations:
"coder model error array problem" » "coder model error leray problem" (Expand search), "coder model error parity problem" (Expand search), "cover model error array problem" (Expand search), "decoder model error array problem" (Expand search), "copper model error array problem" (Expand search), "coder model sensor array 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 model error array problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder model error array problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder model error array problem ) OR ( api python python python programming ))*.