Perhaps you should try some spelling variations:
yan planet » a planet, can plant, ein planet
planet how » plans how, plan how, planet law
zhang xin » zhang jian, zhang ming, zhang fan
song seng » hong seung, dong sheng, hong sheng
how west » how best, how we, how well
nan yan » nan ya, wang yan, qian yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: nan yan planet how west zhang xin ((song seng) or ((hong or long) seo)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nan yan planet how west zhang xin ((song seng) OR ((hong OR long) seo)) ;.
• Adding a wildcard symbol may retrieve word variants: nan yan planet how west zhang xin ((song seng) or ((hong or long) seo)) ;*.