Perhaps you should try some spelling variations:
lang firm » plant firm, range firm, lang tim
firm hong » firm how, from hong
wing yan » wang yan, wing ian, wing tan
hong shu » cong shu, tong shui, wong shiu
ii lang » ii land, ii long, im lang
yan di » yang di, yan zi, ryan die
pan di » pan ji

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wing yan ((yan di) or (pan di)) ii lang firm hong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan ((yan di) OR (pan di)) ii lang firm hong shu ;.
• Adding a wildcard symbol may retrieve word variants: wing yan ((yan di) or (pan di)) ii lang firm hong shu ;*.