Perhaps you should try some spelling variations:
wang liang » wang yang
dong yang » dong hoang, wang yang, yang yang
yang thi » dang thi, yang chik, yang di
thi mong » thi hong, thi minh
mong yue » wong yue, hong yu, wang yue
dong di » dong sin
a text » a test
y a » y la

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) or (((dong yang) or (dong di)))) y a text yang thi mong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang liang) OR (((dong yang) OR (dong di)))) y a text yang thi mong yue ;.
• Adding a wildcard symbol may retrieve word variants: ((wang liang) or (((dong yang) or (dong di)))) y a text yang thi mong yue ;*.