Reported for: Toolset Types 1.9
Resolved in: Toolset Types 1.9.1
Using two or more Types checkboxes fields inside a Views parametric search can produce wrong results when selecting options from more than one field.
This issue will be fixed in the next release of Toolset Types.
Until then, you can download this file, extract it and use it to overwrite the existing file in your website’s ../wp-content/plugins/types/embedded/ location.