The language of your user account determines the default language which content will be filtered to when viewing any marketplace or global search result. However, you can always chose to look for content outside of your default language by changing their search filters.
Changing the default language
If you wish to change your default language, this can be done by:
Click on your user avatar in the top navigation bar and select "Settings"
Click the "Account" tab in the "General" group
Choose your preferred language
Click "Submit" to save this choice.