Perhaps you should try some spelling variations:
human haptic » human habit, human hair
zhang human » zhang han, shaping human, zhang huotian
hoong chang » hoong ang, huang chang, joon chang
huang ting » huang jing, huang ying, huang bin
huang yang » huang ying, huang chang, wang yang
haptic et » haptic _
li zhang » _ zhang

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: li zhang human haptic et ((huang ting) OR (((huang yang) OR (hoong chang)))) kyoung yang ;~.
• Adding a wildcard symbol may retrieve word variants: li zhang human haptic et ((huang ting) or (((huang yang) or (hoong chang)))) kyoung yang ;*.