Custom report help in Google Analytics

Hey there,

I have a question with regards to custom report in Google Analytics. For a client I am wanting to make a custom report that only tshowhe revenue that comes in from a specific set of landing pages from a specific country

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So the case is:

Our client has a multi-country webshop that servers people in different languages. I want to ONLY include the traffic that comes from a specific landing page, but to be safe I want to include all the language variations from that landing page, so for example:

/en/sale

/es/sale

/de/sale

But I don't want the traffic that doesn't come via that landing page to be included.

Does anyone know how to set this up in custom reports in Analytics?

I tried:

Filtering per country and then per landing page and including the regex /en/sale and /es/sale but this breaks the report.
Thanks in advance!