Perhaps you should try some spelling variations:
planet how » plans how, plan how, planet law
best chan » best what, best when
chan dang » chan kang, chan eng, chan fong
wing tan » wing ian, liang tan, hong tan
sand how » stand how, hand how, land how
hung seo » hong seo
hung ho » gung ho, sung ho

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: wing tan ((planet how) OR (sand how)) best chan dang ((hung seo) OR (hung ho)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing tan ((planet how) or (sand how)) best chan dang ((hung seo) OR (hung ho)) ;~".
• Adding a wildcard symbol may retrieve word variants: wing tan ((planet how) or (sand how)) best chan dang ((hung seo) OR (hung ho)) ;*.