Perhaps you should try some spelling variations:
has transformed » have transformed, a transformed, law transformed
transfer school » transform school, transfer scheme, transfers schooling
oil transfer » file transfer, social transfer, risk transfer
school based » school age
vague one » vase one
vague de » vagues de, langue de, vue de
one oil » one only, some oil
de has » de haas, he has, dm has

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: (( vague one oil transfer school based ) OR ( vague de has transformed _ cao ))~.
• Adding a wildcard symbol may retrieve word variants: (( vague one oil transfer school based ) or ( vague de has transformed _ cao ))*.