Perhaps you should try some spelling variations:
training visit » training test
training cost » training costs, training course, trading costs
trading risk » trading case, trading cost, sharing risk
hua credit » dual credit, a credit, ida credit
dong yang » dong hoang, wang yang, yang yang
yang ya » yang yi, yang ka, yang y
cong » congo, long, hong

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 ya hua credit ((trading risk) or (((training visit) OR (training cost)))) cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang ya hua credit ((trading risk) OR (((training visit) OR (training cost)))) cong shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang ya hua credit ((trading risk) or (((training visit) OR (training cost)))) cong shu ;".
• Adding a wildcard symbol may retrieve word variants: dong yang ya hua credit ((trading risk) or (((training visit) OR (training cost)))) cong shu ;*.