Perhaps you should try some spelling variations:
19 changed » _ changed, a changed, 9 changes
l changed » _ changed, a changed, il changer
shang kai » shang hai
lang yan » wang yan, wang yang, zhang yan
yan yang » yang yang, yao yang, dan yang
wang yue » wong yue, wang hua, wang yan
judy » july

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: lang yan yang judy ((l changed) OR (19 changed)) john ((shang kai) OR (wang yue)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan yang judy ((l changed) OR (19 changed)) john ((shang kai) or (wang yue)) ;~".
• Adding a wildcard symbol may retrieve word variants: lang yan yang judy ((l changed) OR (19 changed)) john ((shang kai) or (wang yue)) ;*.