Perhaps you should try some spelling variations:
yong zhang » yong phang, kong hang, yan zhang
jeang yean » jeong yeon
seung yeon » jeong yeon, seung joon, seung won
wang yong » wang yang, wang hyoung, wang yan
flow past » float past, flow cost, flow path
zhang ii » zhang i, zhang li, zhang si
ii testi » i testi, ii test, ai test

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: wang yong zhang ii testi ((new model) OR (flow past)) ((jeang yean) OR (seung yeon)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yong zhang ii testi ((new model) or (flow past)) ((jeang yean) or (seung yeon)) ;*.