I know it from the want AD.

我是从招聘广告上知道的。

Insert a want AD, and it may help.

登一则招聘广告，也许有用。

He got a job through a newspaper want AD.

他通过报纸上的招聘广告找到了一份工作。

Have you read the want AD in the newspaper?

你看过报纸上的招聘广告吗？

Remember the board which is stuck by a lots of want ad near the canteen of campus?

还记得校园饭堂门口白板上面的那些招聘小广告么?。