I see many residential streets have been changed by User 8221, to "living streets".  Having looked at some of these while recently in Dalat, these streets DO NOT conform to the guidance in both global and Vietnamese Wiki's.
The majority of these do not have shared access for pedestrians and vehicles, and the original tag of residential was correct.
Its true that there are a number of ways that only motorcycles can physically drive down and in reality, access is shared with pedestrians, but this does not apply to the larger streets where vehicles are visible.  In this case, perhaps alley with the access tags of motor_vehicle=no, motorcycle=yes would be more appropriate ? Or even consider a path/footway where the width is limited.
I strongly urge 8221 to review & revert these changes, where applicable.