many of the addresses you are using are not specific enough for google to find using the google geocoder.
for example:
Level 1 - 47 Murray Street, Pyrmont, Sydney, NSW, 2009, Australia
If i visit maps.google.com, google cannot find this address.
another address that wont work is:
Suite 118/243 Pyrmont Street, Pyrmont, Sydney, NSW, 2009, Australia
The google geocoder does not understand suite numbers.
or this:
Lower Level - Star City Casino, Pyrmont, Sydney, NSW, 2009, Australia
does not offer a street number.
These may be addresses a human would understand, but the google geocoding service does not.
however, this address:
205 Harris Street, Pyrmont, Sydney, NSW, 2009, Australia
uses a properly formatted street number, so google can find it.