Perhaps you should try some spelling variations:
"teaching computation from complex program" » "teaching computational from complex program" (Expand search), "teaching competitions from complex program" (Expand search), "teaching compensation from complex program" (Expand search), "teaching competition from complex program" (Expand search), "teaching amputation from complex program" (Expand search), "teaching complication from complex program" (Expand search), "teaching computation from simplex program" (Expand search), "teaching computation from complex programmes" (Expand search), "teaching computation from complex prograded" (Expand search)
"using computational code coding program" » "and computational code coding program" (Expand search), "using computational model coding program" (Expand search), "using computational cost coding program" (Expand search), "using computational models coding program" (Expand search), "using computational code cloning program" (Expand search), "using computational code loading program" (Expand search), "using computational code cooling programs" (Expand search), "using computational code codigo program" (Expand search), "using computational code according program" (Expand search)

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