=SI(NB.SI($B2;"*"&F$1&"*");$D2;"")
=SOMMEPROD(($A$2:$A$30>DATEVAL("31/10/2010"))*($A$2:$A$30<DATEVAL("01/12/2010"))*(ESTNUM(CHERCHE(F$1;$B$2:$B$30)))*$D$2:$D$30)*-1
=SOMMEPROD(($A$2:$A$30>$F12-1)*($A$2:$A$30<$F13)*(ESTNUM(CHERCHE("Aldi";$B$2:$B$30))+ESTNUM(CHERCHE("Lidl";$B$2:$B$30))+ESTNUM(CHERCHE("Delh";$B$2:$B$30)))*$D$2:$D$30)*-1