Perhaps you should try some spelling variations:
china's test » china's west, china's quest, china's belt
figures add » figures a, figures amp, figures de
dong hoang » hong hong
test cases » test case
figures do » figures de, figures how, figures _
dong di » dong sin
shin » skin, sein, thin

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: ((dong di) OR (dong hoang)) did china's test cases ((figures do) OR (figures add)) shin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong di) or (dong hoang)) did china's test cases ((figures do) OR (figures add)) shin ;~".
• Adding a wildcard symbol may retrieve word variants: ((dong di) or (dong hoang)) did china's test cases ((figures do) OR (figures add)) shin ;*.