missing records

hi experts,

here is my view

 SELECT
  dbo.orcCHAMBRES.NUMCHB,
  dbo.orcCHAMBRES.TYPCHB,
  dbo.orcCHAMBRES.ETATCHAMB,
  dbo.orcPLANNING.DATEARRIV,
  dbo.orcPLANNING.NBADULTES,
  dbo.orcPLANNING.NOMCLI,
  dbo.orcPLANNING.NUMSEJOUR,
  dbo.orcSEJOURS.COMMENT,
  dbo.orcSEJOURS.MEMO,
  max( dbo.orcSEJOURS.DATEDEPART) AS max_planning_date
FROM
  dbo.orcCHAMBRES
  LEFT OUTER JOIN dbo.orcPLANNING ON (dbo.orcCHAMBRES.NUMCHB = dbo.orcPLANNING.NUMCHB)
  LEFT OUTER JOIN dbo.orcSEJOURS ON (dbo.orcPLANNING.NUMSEJOUR = dbo.orcSEJOURS.NUMSEJOUR)
WHERE
  dbo.orcPLANNING.DATEARRIV LIKE '20110715' AND
  dbo.orcCHAMBRES.TYPCHB NOT LIKE 'SALO'
GROUP BY
  dbo.orcCHAMBRES.NUMCHB,
  dbo.orcCHAMBRES.TYPCHB,
  dbo.orcCHAMBRES.ETATCHAMB,
  dbo.orcPLANNING.DATEARRIV,
  dbo.orcPLANNING.NBADULTES,
  dbo.orcPLANNING.NOMCLI,
  dbo.orcPLANNING.NUMSEJOUR,
  dbo.orcSEJOURS.COMMENT,
  dbo.orcSEJOURS.MEMO,
  dbo.orcSEJOURS.DATEDEPART
ORDER BY
  dbo.orcCHAMBRES.NUMCHB

I need it to be modified in order to show all the records from  dbo.orcCHAMBRES even if other tqbles have no values

thank