Although you can write the exact SKU of each product you want, you can also include multiple SKUs with the following operators:
? (question mark)
This can represent any single letter/number between a-z, 0-9.
Examples
location? matches locationa, locationb, location0, etc.
* (asterisk)
This can represent any number of characters (including zero, in other words, zero or more characters).
Examples
loc* matches locations, location12345
[ ] (square brackets)
Specifies a range.
Examples
location[a-e] matches locationa, locationb, locationc, locationd and locatione. This kind of wildcard specifies an “or” relationship (you only need one to match).
location[a,t] matches locationa and locationt