Perhaps you should try some spelling variations:
"coder decoder causing activity program" » "coder decoder calling activity program" (Expand search), "coder decoder using activity program" (Expand search), "coder decoder raising activity program" (Expand search), "coder decoders hamming activity program" (Expand search), "encoder decoder causing activity program" (Expand search)
"_ pitons python python programming" » "_ pitons pythons python programming" (Expand search), "_ pitons piton python programming" (Expand search), "_ pitons pytm python programming" (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder causing activity program\") OR (\"_ pitons python python programming\"))~".
• Removing quotes may allow a broader search: (( coder decoder causing activity program ) OR ( _ pitons python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder decoder causing activity program") OR ("_ pitons python python programming"))*.