Perhaps you should try some spelling variations:
yang lanka » yang anda
zhang ming » zhang xin
wang yang » wang yan, wang liang, wang yanling
lanka p.w » lanka 3.1, lanka 9.1, lanka how
p.w west » new west
cong seo » hong seo, cong shu, von seo
cong sun » cong shu, cong van, wing sun

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 lanka p.w west zhang ming ((cong seo) OR (cong sun)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang lanka p.w west zhang ming ((cong seo) OR (cong sun)) ;".
• Adding a wildcard symbol may retrieve word variants: wang yang lanka p.w west zhang ming ((cong seo) OR (cong sun)) ;*.