Perhaps you should try some spelling variations:
"codes select mimo precodes program" » "codes select mimo precoce programa" (Expand search), "codes select mimo prices program" (Expand search), "codes select mimo practices program" (Expand search), "codes select mimo precoder program" (Expand search), "codes select mimo precoding program" (Expand search), "codes select mimo redes program" (Expand search), "codes select maize precodes program" (Expand search), "modes select mimo premodes program" (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: (("codes select mimo precodes program") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"codes select mimo precodes program\") OR (\"on python python python programming\"))*".
• Removing quotes may allow a broader search: (( codes select mimo precodes program ) OR ( on python python python programming ))*.