Perhaps you should try some spelling variations:
"by computational and computation program" » "by computational and computational program" (Expand search), "by computational and computational programs" (Expand search), "by computational and compensation program" (Expand search), "by computational fluid computation program" (Expand search), "_ computational and computation program" (Expand search), "and computational and computation program" (Expand search), "by computational of computation program" (Expand search)
"using modes from python programming" » "using models from python programming" (Expand search), "using modis from python programming" (Expand search), "using model from python programming" (Expand search), "using modes from pathogen programming" (Expand search), "using modes from anthony programming" (Expand search), "using codes from python programming" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"by computational and computation program\") OR (\"using modes from python programming\"))~".
• Removing quotes may allow a broader search: (( by computational and computation program ) OR ( using modes from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("by computational and computation program") OR ("using modes from python programming"))*.