Perhaps you should try some spelling variations:
"code coding decoding plc's programming" » "code coding decoding plc programming" (Expand search), "code coding decoding c programming" (Expand search), "code coding decoding block programming" (Expand search), "code encoding decoding plc's programming" (Expand search), "code reading decoding plc's programming" (Expand search), "code joint decoding plc's programming" (Expand search), "code coding decoding process programming" (Expand search), "code cloning decoding plc's programming" (Expand search), "code codigo decoding plc's programming" (Expand search), "code according decoding plc's programming" (Expand search)
"python python python python programming" » "pythons python pythons python programming" (Expand search), "piton python piton python programming" (Expand search), "pitons python pitons 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: (("code coding decoding plc's programming") OR ("python python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"code coding decoding plc's programming\") OR (\"python python python python programming\"))".
• Removing quotes may allow a broader search: (( code coding decoding plc's programming ) OR ( python python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("code coding decoding plc's programming") OR ("python python python python programming"))*.