A report may be created in one language, and then run in
a different language. When you filter for specific values on multilingual
query items, the filter does not recognize the values because they exist
only in the original language.
When creating filters in multilingual reports, try to use
non-multilingual query items, such as numerical identifiers, for the search
criteria, because they are applicable in all languages. For example, use
the product code rather than a multilingual product name.