Perhaps you should try some spelling variations:
"coder coder detecting plc programming" » "coder model detecting plc programming" (Expand search), "coder code detection plc programming" (Expand search), "coder hole detecting plc programming" (Expand search), "coder coder detecting c programming" (Expand search), "coder coder detecting block programming" (Expand search), "coder coder detecting _ programming" (Expand search), "coder coder detecting pb programming" (Expand search), "coder coder detecting cell programming" (Expand search), "coder coder detecting and programming" (Expand search), "coder decoder detecting plc programming" (Expand search), "code code detecting plc programming" (Expand search), "decoder codec detecting plc programming" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 coder detecting plc programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder detecting plc programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder detecting plc programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder detecting plc programming") OR ("on python python python programming"))*.