これは遅いかもしれません:
SELECT Top 101 Offices.OfficeID, ContractsBooksCommodities.CommodityID
FROM ((((Offices
INNER JOIN tbl_Sales ON Offices.CompanyID = tbl_Sales.CompanyID)
INNER JOIN ContractBooks ON tbl_Sales.CompanyID = ContractBooks.CompanyID)
INNER JOIN ContractsBooksAds ON ContractBooks.ContractNum = ContractsBooksAds.ContractNum)
INNER JOIN ContractsBooksBrands ON ContractsBooksAds.ContractNum = ContractsBooksBrands.ContractNum)
INNER JOIN ContractsBooksCommodities ON ContractsBooksBrands.ContractNum = ContractsBooksCommodities.ContractNum
WHERE Offices.OfficeID NOT IN (SELECT Top 99 Offices.OfficeID
FROM ((((Offices
INNER JOIN tbl_Sales ON Offices.CompanyID = tbl_Sales.CompanyID)
INNER JOIN ContractBooks ON tbl_Sales.CompanyID = ContractBooks.CompanyID)
INNER JOIN ContractsBooksAds ON ContractBooks.ContractNum = ContractsBooksAds.ContractNum)
INNER JOIN ContractsBooksBrands ON ContractsBooksAds.ContractNum = ContractsBooksBrands.ContractNum)
INNER JOIN ContractsBooksCommodities ON ContractsBooksBrands.ContractNum = ContractsBooksCommodities.ContractNum
ORDER BY Offices.OfficeID, ContractsBooksCommodities.CommodityID)
ORDER BY Offices.OfficeID, ContractsBooksCommodities.CommodityID
どのフィールドがソートを一意にするかはわかりませんが、MS Accessはそれ以外の場合は一致を返すため、これが必要です。