This is not vBET issue anymore. As you wrote Google takes it from its own resources - vBET is not generating such links anymore (if you find it does - please note it and we will correct it, but as we know now this issue is solved).
And the flags are correct - in this link ja is language and the rest is treated as normal URL, so sv is just directory, that is why it is included there.
You have to go to your .htaccess file and add rule which will redirect all such requests to request with single lang code. After a while Google will update it and issue will be gone.
Here is such rule (not tested since on our forum such URLs are not working):
Code:
RewriteRule ^/?(af|sq|ar|be|bg|ca|zh-CN|hr|cs|da|nl|en|et|tl|fi|fr|gl|de|el|iw|hi|hu|is|id|ga|it|ja|ko|lv|lt|mk|ms|mt|no|fa|pl|pt|ro|ru|sr|sk|sl|es|sw|sv|zh-TW|th|tr|uk|vi|cy|yi)/(af|sq|ar|be|bg|ca|zh-CN|hr|cs|da|nl|en|et|tl|fi|fr|gl|de|el|iw|hi|hu|is|id|ga|it|ja|ko|lv|lt|mk|ms|mt|no|fa|pl|pt|ro|ru|sr|sk|sl|es|sw|sv|zh-TW|th|tr|uk|vi|cy|yi)/(.*)?$ http://%{HTTP_HOST}/$1/$3 [L,R=301]
Please add it before vBET rules and test it immediately. After some while (in Google it can be up to few months) this rule will not be necessary anymore so you will be able to comment it and see does issue comes back or not.
Let us know does it is working