I have a very confusing point. I use SB video ads to accurately deliver keywords, but I found that other words will appear in the user search interface, and these words occupy most of my budget, which makes me very distressed! For this reason, I sought help from the Amazon advertising team. They told me that other related synonyms will also appear in the SB video ads in the precise delivery method. If I want to solve this problem, I need to modify the delivery word to a broad match mode and use the modifier symbol ‘+’ to connect each word. However, another staff member of the Amazon advertising team told me that the modifier symbol ‘+’ is not applicable in SB video ads. For this reason, I want to know the final answer. Does the modifier symbol ‘+’ work in SB video ads?