Perhaps you should try some spelling variations:
"the computation using declarative programming" » "the computations using declarative programming" (Expand search), "the computation in declarative programming" (Expand search), "the composition using declarative programming" (Expand search), "the computation mining declarative programming" (Expand search), "the computation engine declarative programming" (Expand search), "the computational using declarative programming" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python 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: (("the computation using declarative programming") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"the computation using declarative programming\") OR (\"using python python python programming\"))".
• Removing quotes may allow a broader search: (( the computation using declarative programming ) OR ( using python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("the computation using declarative programming") OR ("using python python python programming"))*.