Perhaps you should try some spelling variations:
zheng alan » zheng quan
zheng xuan » zheng quan, cheng guan
yulong han » long han
puan sri » tan sri
tan yang » dan yang, tan ying, tan yong
guan li » gan li, yuan li, yuan lin
yang li » yang lin, yang di, yang xi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((zheng alan) OR (zheng xuan)) ((puan sri) OR (guan li)) tan yang li yulong han ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((zheng alan) OR (zheng xuan)) ((puan sri) or (guan li)) tan yang li yulong han ;~".
• Adding a wildcard symbol may retrieve word variants: ((zheng alan) OR (zheng xuan)) ((puan sri) or (guan li)) tan yang li yulong han ;*.