Perhaps you should try some spelling variations:
"coder decoder period function coding" » "coder decoder periodic function coding" (Expand search), "coder decoder periodic functions coding" (Expand search), "coder decoder tapering function coding" (Expand search), "coder decoder period function crowding" (Expand search), "coder decoder period function modeling" (Expand search), "coder decoder period function working" (Expand search), "coder recovery period function coding" (Expand search), "coder code period function coding" (Expand search), "encoder decoder period function coding" (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 decoder period function coding") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder period function coding\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder period function coding ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder period function coding") OR ("on python python python programming"))*.