Replace "Japan" with the words or phrases relevant to your topic.
japan AND (map OR maps OR atlas*)
japan AND travel*
Geopolitical names in subject headings
China
Hong Kong (China)
Japan
Korea [use for "works on Korea for the pre-1948 period, including the period under Allied occupation, as well as South Korea and North Korea, collectively, for the post-1948 period"]
Macau (China: Special Administrative Region)
Mongolia
Korea (North) [use for works on North Korea, 1948-present]
Korea (South) [use for works on South Korea, 1948-present]