Perhaps you should try some spelling variations:
training course » training courses
equal credit » dual credit, equity credit, rural credit
trading case » trading costs, trade case
wang liang » wang yang
tong shui » tong hui, cong shu, gong hui
liang ye » jiang ye, liang wei, jiang yi
ye equal » one equal, _ equal, 6 equal

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang liang ye equal credit ((trading case) or (training course)) tong shui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang ye equal credit ((trading case) OR (training course)) tong shui ;.
• Adding a wildcard symbol may retrieve word variants: wang liang ye equal credit ((trading case) or (training course)) tong shui ;*.