Perhaps you should try some spelling variations:
best thing » last thing, best bring
dong sign » dong sin, among sign, dong bin
thing yan » zhang yan, thing you, thing a
lang yan » wang yan, wang yang, zhang yan
ya a » a a, ye a, yu a
ka a » kai a, a a, k a
y a » y la
cong » congo, long, hong

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) OR (dong sign)) ((((ya a) OR (y a))) OR (ka a)) best thing yan cong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((lang yan) or (dong sign)) ((((ya a) OR (y a))) or (ka a)) best thing yan cong shu ;~".
• Adding a wildcard symbol may retrieve word variants: ((lang yan) or (dong sign)) ((((ya a) OR (y a))) or (ka a)) best thing yan cong shu ;*.