I have a potential client who is from Brazil and is focusing on customers in Brazil and Portugal. Their website is in Portuguese. They are slightly outside of my area of expertise, and I have another potential client similar to them. How can I research keywords and long-tail keywords in a language that I am not familiar with? Additionally, they are very specific in their niche and I am not familiar with their services. Google does not provide automatically generated questions for them. Does anyone have experience with this kind of situation?
SERPtag keyword planner tool can be used for Portuguese keywords. It has an option for Portuguese and also allows you to track keywords on the Portuguese Google search engine.