Perhaps you should try some spelling variations:
gain sharing » basin sharing, chain sharing, fair sharing
ghana health » china health, data health
min hyoung » min hong
zhang yan » zhang fan, zhang jian, wang yan
yan ghana » yan guan, yan zhang
gain sang » shin sang
mun young » yun young, ju young, cyn young

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

• Performing a fuzzy search may retrieve terms with similar spellings: zhang yan ghana health ((gain sang) or (gain sharing)) ((min hyoung) OR (mun young)) tan ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: zhang yan ghana health ((gain sang) OR (gain sharing)) ((min hyoung) OR (mun young)) tan ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "zhang yan ghana health ((gain sang) or (gain sharing)) ((min hyoung) OR (mun young)) tan ;".
• Adding a wildcard symbol may retrieve word variants: zhang yan ghana health ((gain sang) or (gain sharing)) ((min hyoung) OR (mun young)) tan ;*.