The Finnish Embassy in Hanoi provides the following services:
consular services, including assistance to Finnish citizens in distress, and advice and instructions in matters relating to Finnish authorities’ services, individual citizen’s legal rights and procedures
new passport if your passport becomes lost, stolen or damaged
visas, residence permits and work permits to non-Finnish citizens who come to Finland
The Embassy recommends that Finnish citizens travelling in Vietnam register their contact information on matkustusilmoitus.fi (available in Finnish and Swedish) page.