Google Ads video campaigns, targeting by audience (Stomatology)

There were 5 video campaigns (of 4 by audience, and 1 by topic).
The video campaign used two special segments of the audience interested in dentistry: a segment of users who entered any of the dentistry-related search queries to Google, and users with interests or purchasing intentions regarding dentistry. Keywords were prescribed to define these audiences. Advertising groups were used both with targeting expansion and without, while the majority of groups without targeting expansion showed themselves better in statistics (foreseen).