Perhaps you should try some spelling variations:
studies united » sources united, states united, studies und
3 studies » 2 studies
yang jui » yang judy, yang xi, yang yi
united a » united _, unite a, united ara
min hong » amin hong, tin hong, min hyoung
a min » a main, a mini, a mine
tan » than

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: ((((yang jui) OR (yang dean))) OR (yang di))a 3 studies united a min hong tan ;~.
• Adding a wildcard symbol may retrieve word variants: ((((yang jui) or (yang dean))) or (yang di))a 3 studies united a min hong tan ;*.