Perhaps you should try some spelling variations:
coder functioning » models functioning (Expand search), proper functioning (Expand search), role functioning (Expand search)
functioning plc's » functioning faces (Expand search), functioning policies (Expand search), functioning process (Expand search)
plc's programming » plc programming (Expand search), c programming (Expand search), block programming (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
coder coder » coder decoder (Expand search), code code (Expand search), decoder codec (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( coder coder functioning plc's programming ) OR ( _ python python python programming ))~.