Perhaps you should try some spelling variations:
studien uber » studie uber, studien der, studien zur
3 studien » 3 studies, i studien, 2.3 studien
uber das » uber die, uber den
min hong » amin hong, tin hong, min hyoung
yang yi » yang xi, yang jui
das min » das main, das mit, das amini
tan » than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((yang yi) or (yang dean))) or (yang di))a 3 studien uber das min hong tan ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((yang yi) OR (yang dean))) OR (yang di))a 3 studien uber das min hong tan ;*.