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 codigo matlab programa" » "coder code codigo matlab programa" (Expand search), "coder hover codigo matlab programa" (Expand search), "coder code codigos matlab programa" (Expand search), "coder decoder codigo matlab programa" (Expand search), "code code codigo matlab programa" (Expand search), "decoder codec codigo matlab programa" (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 coder codigo matlab programa\") OR (\"on python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder codigo matlab programa ) OR ( on python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder codigo matlab programa") OR ("on python python python programming"))*.