Perhaps you should try some spelling variations:
"advanced calculations using computer program" » "advanced calculation using computer program" (Expand search), "advanced computations using computer program" (Expand search), "advanced evaluations using computer program" (Expand search), "advanced calculations in computer program" (Expand search), "advanced calculations and computer program" (Expand search)
"advanced modulation based coding program" » "advanced calculation based coding program" (Expand search), "advanced oxidation based coding program" (Expand search), "advanced population based coding program" (Expand search), "advanced modulator based coding program" (Expand search), "advanced formulation based coding program" (Expand search), "advanced modulation based cloning program" (Expand search), "advanced modulation based loading program" (Expand search), "advanced modulation based cooling programs" (Expand search), "advanced modulation based costing program" (Expand search), "advanced modulation based coating program" (Expand search), "advanced modulation based coatings program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced modulation based coding program\") OR (\"advanced calculations using computer program\"))~".
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