Perhaps you should try some spelling variations:
gender class » gender biases, gender bias
mean change » can change, urban change
haul robin » paul rozin, hahnel robin
robin paul » robyn paul, robbins paul, sabin paul
land time » land title, lead time, land take
land tab » land tax, land take, land a

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: mean change ((land tab) OR (land time)) gender class haul robin paul ;~.
• Adding a wildcard symbol may retrieve word variants: mean change ((land tab) or (land time)) gender class haul robin paul ;*.