Perhaps you should try some spelling variations:
"coding duration and declarative programming" » "loading duration and declarative programming" (Expand search), "flooding duration and declarative programming" (Expand search), "feeding duration and declarative programming" (Expand search), "coding duration and decorative programming" (Expand search), "coding duration of declarative programming" (Expand search), "coding duration the declarative programming" (Expand search), "coding maturation and declarative programming" (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: (("coding duration and declarative programming") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coding duration and declarative programming\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( coding duration and declarative programming ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coding duration and declarative programming") OR ("using coding python python programming"))*.