Perhaps you should try some spelling variations:
derived stem » derived from
china's test » china's west, china's quest, china's belt
can china's » china china's
test using » tests using, tested using, testing using
dong jung » hong jong, dong ping, dong yang
wang yang » wang yan, wang liang, wang yanling
dong di » dong sin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((dong jung) OR (wang yang))) OR (dong di)) can china's test using derived stem (shin OR sein) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dong jung) OR (wang yang))) OR (dong di)) can china's test using derived stem (shin OR sein) ;*".