Perhaps you should try some spelling variations:
cost data » test data
want you » what you
you ding » you being, you going, you liang
ding der » dinge der, dinge des
der cost » oder cost, user cost, debt cost
data jim » data job
wong sau » wong sam, wong siu, wong shiu
lai » laid

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: want you ding der cost data jim ((wong sau) OR (wong lai)) ;~.
• Adding a wildcard symbol may retrieve word variants: want you ding der cost data jim ((wong sau) or (wong lai)) ;*.