Perhaps you should try some spelling variations:
"of computation in declarative programming" » "of computational in declarative programming" (Expand search), "the computation in declarative programming" (Expand search), "of computation and declarative programming" (Expand search), "of computation of declarative programming" (Expand search), "of imputation in declarative programming" (Expand search), "of computation on 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)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"of computation in declarative programming\") OR (\"using python python python programming\"))".
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