Perhaps you should try some spelling variations:
tested using » test using, tests using, testing using
dong hoang » hong hong
dong yang » wang yang, yang yang, dan yang
erlang a » lang a
a tested » a testbed, _ tested, a tester
using a » using _
a shang » _ shang, a sharing, gao shang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong yang) OR (dong hoang)) erlang a tested using a shang jin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) OR (dong hoang)) erlang a tested using a shang jin ;*".