Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
wong john » wrong john, kong john, longo john
yi chang » ii chang, ying chang, jin chang
kim wong » kim song, kie wong, kim dong
ai test » api test, i test, ii test
test a » test _, test 4, test 5
a kim » _ kim, a kit, b kim

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((wang yang) OR (yi chang)) ai test a kim wong john ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((wang yang) OR (yi chang)) ai test a kim wong john ;*.