Perhaps you should try some spelling variations:
knowing about » known about, know about, knowing your
change ann » chang ann, change annex, change a
wang than » wang shawn, wang yuhan, wang ban
kong your » kong young, knowing your
dan yang » daun yang, tan yang, wang yang
ann dan » mann dana, ann doane, kann das

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 than) OR (wang yan)) change ann dan yang di ((kong your) OR (knowing about)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang than) OR (wang yan)) change ann dan yang di ((kong your) or (knowing about)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang than) OR (wang yan)) change ann dan yang di ((kong your) or (knowing about)) ;*.