Perhaps you should try some spelling variations:
wang shiyong » wang hyoung
wang luhang » wang liang, wang lihong, wang yuhan
chen zhang » cheng zhang, zhen zhang, chen zheng
a convex » _ convex, a context
fang n » fang _, fang a
n chen » _ chen, a chen, z chen
a cone » a code, a contre, a conger

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang luhang) or (wang shiyong)) fang n chen zhang ((a cone) OR (a convex)) sun ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang luhang) OR (wang shiyong)) fang n chen zhang ((a cone) OR (a convex)) sun ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang luhang) or (wang shiyong)) fang n chen zhang ((a cone) OR (a convex)) sun ;*".