Perhaps you should try some spelling variations:
yan duong » yan cong, lam duong
duong van » cong van, duong anh
van west » van soest, van het, van es
yang jin » yang jie, yang jun, ying jin
hong hai » shang hai, zhong tai, dang hai
yan tin » yuan ting, yang lin
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan duong van west ((yan tin) or (yang jin)) hong hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan duong van west ((yan tin) OR (yang jin)) hong hai ;*.