You can enter data in one or more fields. Using more fields may get a more precise result, but may also exclude relevant records. For example, if you are looking for a house in Smith St, Thornbury, but the tender notice was for 'two storey residence in Thornbury', the record will come up if you enter only 'Thornbury', but will not come up if you enter both 'Thornbury' and 'Smith'. The answer is to try different combinations - suburb/architect, suburb/date &c .