TopicMojo is very helpful to find the questions your audience is asking about various topics. To give an example, here are some of the questions I got when I entered "Appsumo" as the keyword:

what is appsumo?
where is appsumo?
what is appsumo day?
how do i get listed on appsumo?
what is appsumo used for?
how much is appsumo?
where is appsumo located?
how to sell on appsumo marketplace?
how much commission does appsumo take?
how do i use appsumo?
what does appsumo do?
how did appsumo grow?
what company is appsumo?
who created appsumo?
what is appsumo select
what is appsumo marketplace
what is appsumo day
what is appsumo plus
appsumo
where is appsumo located
how much does appsumo take
etc.

Some things I hope will be added to the tool:
*Choose global as search, not specific country
*Copy all results button, so you can paste in to your favourite AI writing tool