ช่วยด้วยครับ อยากทำปุ่มค้นหาข้อมูลแบบ multi อ่ะครับ

Dim strSQL As String = "SELECT * FROM table WHERE 1=1"

IF Trim(txt1.Text) <> "" Then
	strSQL = strSQL & " AND Column1 LIKE '%" & Trim(txt1.Text) & "%' "
End IF

IF Trim(txt2.Text) <> "" Then
	strSQL = strSQL & " AND Column2 LIKE '%" & Trim(txt2.Text) & "%' "
End IF

IF Trim(txt3.Text) <> "" Then
	strSQL = strSQL & " AND Column3 LIKE '%" & Trim(txt3.Text) & "%' "
End IF

        SQLTxt &= "Where(Age between '" & Age1Txt.Text & "' and '" & Age2Txt.Text & "' ) "
        SQLTxt &= "And (Sex like '" & GenderTxt.Text & "') "
        SQLTxt &= "And (BusiPosition like '%" & PositionTxt.Text & "%') "
        SQLTxt &= "And (Bachelor like '%" & EducationTxt.Text & "%') "
        SQLTxt &= "Order By age"