This data store isn’t offering up free data, however, it is a fine commercial stopping point for those in search of hard to find International data products (China, Syria, Phillipines, and more). See the following:
Syria Geological Maps 1:200,000
SYRIA 1:200K Geological Maps/Syrian Arab Republic, Ministry of Industry, Department of Geological and Mineral Research; 1963. 19 Total Sheets, Contours 20m
Topographic Maps of Madagascar (1:50,000)
Hong Kong 1:50,000 Scale Topographic Mapping
Philippines 1:5,000 Scale Topographic Mapping
Philippines 1:5,000 / National Mapping & Resource Information Authority.
French Polynesia Topographic Maps (Iles des Tuamotu)