Perhaps you should try some spelling variations:
control study » control studies
control shu » control sc, control share, control shock
gang mind » yang mind, gang und, sang minh
yang xi » yang di, yang jui
yang yi » yang di, yang jui
li gang » liu gang, ii gang, i gang
wang » wing, wan

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: (wang OR lang) yan ((yang xi) OR (yang yi)) li gang mind ((control shu) OR (control study)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) yan ((yang xi) or (yang yi)) li gang mind ((control shu) OR (control study)) ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or lang) yan ((yang xi) or (yang yi)) li gang mind ((control shu) OR (control study)) ;*.