Perhaps you should try some spelling variations:
"variables sampling and precoder program" » "variable sampling and precoder program" (Expand search), "variables campina and precoder program" (Expand search), "variability sampling and precoder program" (Expand search), "variables sampling and proder program" (Expand search), "variables sampling and recovery program" (Expand search), "variables sampling and precoce programa" (Expand search), "variables sampling and precore program" (Expand search), "variables sampling and decoder program" (Expand search), "variables sampling and precede program" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python 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: (("variables sampling and precoder program") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"variables sampling and precoder program\") OR (\"using coding python python programming\"))*".
• Removing quotes may allow a broader search: (( variables sampling and precoder program ) OR ( using coding python python programming ))*.