Perhaps you should try some spelling variations:
classical resource » classical resources, classical sources, classical research
classical source » classical sources, classic source, classical force
chinese literary » chinese literature, chinese tartary

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((classical resource) OR (classical source)) hierarchy ) OR ( classical chinese literary )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((classical resource) OR (classical source)) hierarchy ) or ( classical chinese literary ))".
• Adding a wildcard symbol may retrieve word variants: (( ((classical resource) OR (classical source)) hierarchy ) or ( classical chinese literary ))*.