Perhaps you should try some spelling variations:
"coder precoder buffer plc programming" » "coder precoder buffer c programming" (Expand search), "coder precoder buffer block programming" (Expand search), "coder precoder buffer _ programming" (Expand search), "coder decoder buffer plc programming" (Expand search), "coder precoder buffer pid programming" (Expand search), "coder precoder buffer pb programming" (Expand search), "coder precoder buffer ph 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 buffer plc programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder buffer plc programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder buffer plc programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder buffer plc programming") OR ("api python python python programming"))*.