Perhaps you should try some spelling variations:
studies der » studie der, studien der, studies das
ii studies » ii studien, aei studies, eui studies
min hong » amin hong, tin hong, min hyoung
yang yi » yang xi, yang jui
der a » der _, der e
a min » a main, a mini, a mine
a ii » a iii, i ii, _ ii
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 ii studies der a 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 ii studies der a min hong tan ;*.