Perhaps you should try some spelling variations:
control based » control board
study control » study contract, study context, study centres
yang study » yang judy, arg study
young ghi » young choi, hong ghi, young hr
young get » young let, young ages, young men
yao yang » yang yang
based a » based ai, based ad, based na

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wan or wing) yao yang study control based a ((young ghi) OR (young get)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wan OR wing) yao yang study control based a ((young ghi) OR (young get)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wan or wing) yao yang study control based a ((young ghi) OR (young get)) ;".
• Adding a wildcard symbol may retrieve word variants: (wan or wing) yao yang study control based a ((young ghi) OR (young get)) ;*.