Perhaps you should try some spelling variations:
"coder communications _ precoder program" » "code communications _ precoder program" (Expand search), "codes communication _ precoder program" (Expand search), "camera communications _ precoder program" (Expand search), "coder communications _ proder program" (Expand search), "coder communications _ recovery program" (Expand search), "coder communications _ precoce programa" (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 communications _ precoder program") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder communications _ precoder program\") OR (\"on python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder communications _ precoder program ) OR ( on python python python programming ))*.