Perhaps you should try some spelling variations:
"using computation from complex program" » "using computational from complex program" (Expand search), "using imputation from complex program" (Expand search), "using compilation from complex program" (Expand search), "using competition from complex program" (Expand search), "using amputation from complex program" (Expand search), "using complication from complex program" (Expand search), "using computation from simplex program" (Expand search), "using computation from complex programmes" (Expand search), "using computation from complex prograded" (Expand search)
"based computation on coding program" » "based computational on coding program" (Expand search), "based competition on coding program" (Expand search), "based compilation on coding program" (Expand search), "based computation of coding program" (Expand search), "based computation in coding program" (Expand search), "based computation an coding program" (Expand search), "based computation on cloning program" (Expand search), "based computation on loading program" (Expand search), "based computation on cooling programs" (Expand search), "based computation non coding program" (Expand search), "based computation and coding program" (Expand search)

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