what's wrong with query

Question

 i have a event receiver that after changing item document  in document library it changes item value in another list. i created the 4 spquery's on same document library and 4 splistitem collections  i need items count for every spquery. i have problem with the first spquery every time i receive count=0 but i have documents on this location (5 documents). my code for spsuery and splistcollection is next

SPQuery fajloviviewAD100 = new SPQuery();
                    fajloviviewAD100.Query = "<Where><And><Contains><FieldRef Name='FileRef'/><Value Type='Text'>A?/100</Value></Contains><Eq><FieldRef Name='FSObjType'/><Value Type='Text'>0</Value></Eq></And></Where>";
                    fajloviviewAD100.ViewAttributes = "Scope='RecursiveAll'";
                    SPListItemCollection fajloviAD1000 = properties.List.GetItems(fajloviviewAD100);
                    SPQuery fajlovi2 = new SPQuery();
                    fajlovi2.Query = "<Where><And><Contains><FieldRef Name='FileRef'/><Value Type='Text'>???/500</Value></Contains><Eq><FieldRef Name='FSObjType'/><Value Type='Text'>0</Value></Eq></And></Where>";
                    fajlovi2.ViewAttributes = "Scope='RecursiveAll'";
                    SPListItemCollection fajloviSIK500 = properties.List.GetItems(fajlovi2);
                    SPQuery fajlovi3 = new SPQuery();
                    fajlovi3.Query = "<Where><And><Contains><FieldRef Name='FileRef'/><Value Type='Text'>???/600</Value></Contains><Eq><FieldRef Name='FSObjType'/><Value Type='Text'>0</Value></Eq></And></Where>";
                    fajlovi3.ViewAttributes = "Scope='RecursiveAll'";
                    SPListItemCollection fajloviSIK600 = properties.List.GetItems(fajlovi3);
                    SPQuery fajlovi4 = new SPQuery();
                    fajlovi4.Query = "<Where><And><Contains><FieldRef Name='FileRef'/><Value Type='Text'>??/700</Value></Contains><Eq><FieldRef Name='FSObjType'/><Value Type='Text'>0</Value></Eq></And></Where>";
                    fajlovi4.ViewAttributes = "Scope='RecursiveAll'";
                    SPListItemCollection fajloviAD700 = properties.List.GetItems(fajlovi4);

fajloviAD100.Count.ToString() 

fajloviSIK500.Count.ToString();
fajloviSIK600.Count.ToString();
fajloviAD700.Count.ToString();

 

fajloviSIK500.Count, fajloviSIK600.count and fajloviAD700.count back values but fajloviAD100.count back 0

 

why? where i made mistake