De or het zoekmachinemarketing?

The correct Dutch article is:

de zoekmachinemarketing

Rule Words ending in -ing: almost always de. See the rule

How to use zoekmachinemarketing

the zoekmachinemarketingde zoekmachinemarketing
this zoekmachinemarketingdeze zoekmachinemarketing
that zoekmachinemarketingdie zoekmachinemarketing
our zoekmachinemarketingonze zoekmachinemarketing
your zoekmachinemarketingjouw zoekmachinemarketing
every zoekmachinemarketingelke zoekmachinemarketing
which zoekmachinemarketing?welke zoekmachinemarketing?
a big zoekmachinemarketing / the big zoekmachinemarketingeen grote zoekmachinemarketing, de grote zoekmachinemarketing