Perhaps you should try some spelling variations:
one parent » lone parents, one percent, one part
wang yong » wang yang, wang hyoung, wang yan
one agent » one event, one gene, und agent
yong cai » dong cao, yong c, yong wah
one saul » one small
tan one » than one, can one, man one
cai a » can a, cai _, car a

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong cai a ((one agent) OR (one parent)) tan one saul ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong cai a ((one agent) OR (one parent)) tan one saul ;*".