Perhaps you should try some spelling variations:
"and computation using linear problems" » "and computations using linear problems" (Expand search), "and computation in linear problems" (Expand search), "and composition using linear problems" (Expand search), "and computational using linear problems" (Expand search), "of computation using linear problems" (Expand search), "and computation using nonlinear problems" (Expand search), "and computation using singular problems" (Expand search), "and computation using quasilinear problems" (Expand search)
"using codigo python python programming" » "using codigo pythons python programming" (Expand search), "using codigo piton python programming" (Expand search), "using codigo pitons python programming" (Expand search), "using indigo python python programming" (Expand search), "using coding python python programming" (Expand search), "using codium python python programming" (Expand search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("and computation using linear problems") OR ("using codigo python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computation using linear problems\") OR (\"using codigo python python programming\"))".
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