Remember to choose Product Name and/or Company/Org name from the drop-down menu.
Try searching for the subject branding or advertising or marketing in order to narrow your search. Choose subject from the drop-down menu.
You may need to look up your chosen brand's parent company in order to find the most complete information.
You can also try googling the company's website in order to find marketing/advertising information.
Use these databases first to find articles related to brand-related topics.
These databases may also have articles helpful to brand-related research.