=IF(ISERROR(SUMPRODUCT(Hang_nhap_Vao!$D$7:$D$300*(Hang_nhap_Vao!$B$7:$B$300=KHO_HANG_TECHPAL!B5)*(Hang_nhap_Vao!$C$7:$C$300=KHO_HANG_TECHPAL!C5)))=TRUE,0,SUMPRODUCT(Hang_nhap_Vao!$D$7:$D$300*(Hang_nhap_Vao!$B$7:$B$300=KHO_HANG_TECHPAL!B5)*(Hang_nhap_Vao!$C$7:$C$300=KHO_HANG_TECHPAL!C5)))