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: ((dong xiao) OR (wang yan)) ya ((((hua brain) OR (a brain))) OR (human brain)) gain yi rong yu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong xiao) or (wang yan)) ya ((((hua brain) OR (a brain))) or (human brain)) gain yi rong yu ;~".
• Adding a wildcard symbol may retrieve word variants: ((dong xiao) or (wang yan)) ya ((((hua brain) OR (a brain))) or (human brain)) gain yi rong yu ;*.