Perhaps you should try some spelling variations:
"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)
"coder coder coding matlab programa" » "coder coder codigo matlab programa" (Expand search), "coder coder modeling matlab programa" (Expand search), "coder coder using matlab programa" (Expand search), "coder modern coding matlab programa" (Expand search), "coder color coding matlab programa" (Expand search), "coder odor coding matlab programa" (Expand search), "coder decoder coding matlab programa" (Expand search), "code code coding matlab programa" (Expand search), "decoder codec coding matlab programa" (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 coding matlab programa") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder coding matlab programa\") OR (\"on python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder coding matlab programa ) OR ( on python python python programming ))*.