The phrase "advertisements could have" is correct and usable in written English.
You can use it when discussing the potential impact or effects of advertisements in a hypothetical or conditional context.
Example: "Advertisements could have a significant influence on consumer behavior if they are targeted effectively."
Alternatives: "ads might possess" or "advertisements may contain".
Furthermore, the recruitment strategy, requiring that all study participants respond to newspaper or online advertisements, could have introduced selection bias.
A number of studies in Western and Asian countries argued that TV advertisements could have a similar impact on dental caries.
In addition, the recruitment strategy involving newspaper and Internet advertisements could have introduced sample selection biases to the extent that some potential participant groups may have less access to these media outlets.
MIAMI GARDENS, Fla .— One night and one night only, the advertisement could have read: Coming to an arena near you, the 1997 Florida Marlins Reunion Tourr.
This is not to say that relationships never occur between US servicemen and civilians in the countries they enter, whether it be Iraq, Afghanistan or any other nation the US military has had a presence in, but the marketing of this advertisement could have been done in a different manner.
In a nonjury trial in January, Justice Beeler convicted Mr. Hirschfeld, 80, on eight counts of contempt, finding that he had violated a rule of silence by running newspaper advertisements that could have influenced jurors during his trial on charges of trying to have his business partner killed.
The species-specific differences of advertisement calls could have evolved as an adaptation to transmission over long distances in different microhabitats as suggested for a number of different vertebrate taxa [ 46- 48].
Instagram had no advertisements, but it could have one day started to attract advertisements.
Thus, the advertisements in ladies' magazines surely could have influenced a housewife to want to appear as the women in the ads were portrayed.
It was the type of play the Geico Gekko featured in the advertisement preceding the highlight clip could have made, or maybe not.
Those policies would give Facebook automatic permission to take a user's post, including a post made by a teenager, and turn it into an advertisement broadcast to anyone who could have seen the original post.
