If the end user's working session is in Japanese, the audit session can not be found with the Quick Query on Audit Analyzer to filter with Japanese character.
Cause:
The "quick query" is entirely based on full-text search. There is limitation of full-text indexing (not search) please refer to the Microsoft's website https://support.microsoft.com/en-us/kb/2252955.
Workaround:
Change the full text indexing language to Japanese from English.
SQL Management Studio > dbo.RawData > Right Click > Full-Text index > Properties > Columns > Tag > Language for Word Breaker -> Japanese.
After modifying the indexing language the session is listed in Audit Analyzer.