Perhaps you should try some spelling variations:
del marcco » del marco, el marco
wang yang » wang yan, wang liang, wang yanling
yang fan » zhang fan, yang dean, yang yang
fan guon » gan guan, yan guan
guon tan » guo yan, poon tan
tan yong » tan hong, tan kong, tan yang
marcco » markcco, marycco, marccco
mar » mark, mary, marc

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang fan guon tan yong ((del marcco) or (del mar)) (hai or hari) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang fan guon tan yong ((del marcco) OR (del mar)) (hai OR hari) ;*.