Perhaps you should try some spelling variations:
"advanced simulation and computer program" » "advanced calculation and computer program" (Expand search), "advanced simulation _ computer program" (Expand search)
"advanced modulation based consting program" » "advanced calculation based consting program" (Expand search), "advanced oxidation based consting program" (Expand search), "advanced population based consting program" (Expand search), "advanced modulator based consting program" (Expand search), "advanced formulation based consting program" (Expand search), "advanced modulation based consulting program" (Expand search), "advanced modulation based counseling program" (Expand search), "advanced modulation based computing program" (Expand search), "advanced modulation based costing program" (Expand search), "advanced modulation based coating program" (Expand search), "advanced modulation based constraint program" (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced modulation based consting program\") OR (\"advanced simulation and computer program\"))~".
• Removing quotes may allow a broader search: (( advanced modulation based consting program ) OR ( advanced simulation and computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced modulation based consting program") OR ("advanced simulation and computer program"))*.