Try the following formula, it cannot recognize the instruments.
result9<-get_data(instruments='SCREEN(U(IN(Equity(active,public,primary))/*UNV:Public*/), IN(TR.HQCountryCode,""CN""), IN(TR.ExchangeCountryCode,""US""), IN(TR.TRBCEconSectorCode,""57""), TR.CompanyMarketCap>=43957372608.65, CURN=USD)',list("TR.CommonName","TR.HeadquartersCountry","TR.ExchangeCountry","TR.TRBCEconomicSector","TR.CompanyMarketCap"), parameters= list('curn'='usd','RH=In','CH=Fd'))