Perhaps you should try some spelling variations:
yong phang » kong hang, ying chang
wang yong » wang yang, wang hyoung, wang yan
haul main » haul mapping
jiu congo » jiu cong, du congo, eic congo
congo shu » cong shu
hua main » a main, hua ban
yan jiu » yang jie, yang jin, pang jiu

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 phang ((hua main) OR (haul main)) yan jiu congo shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong phang ((hua main) OR (haul main)) yan jiu congo shu ;*".