Perhaps you should try some spelling variations:
lang yanling » wang yanling, wang yangming, zhang yunling
yanling yang » yang yang, ying yang
3.4 best » 2.4 best, 3.4 pests
3.4 test » 2.4 test, 3.4 text, 4.4 test
kim song » kim young, kim eung
jeong su » jeong _, jeong mi, jeong 情
4 best » 3 best

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yanling yang ((((3.4 best) or (3.4 test))) or (4 best)) kim song ((jeong su) or (cong shu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yanling yang ((((3.4 best) OR (3.4 test))) OR (4 best)) kim song ((jeong su) OR (cong shu)) ;.
• Adding a wildcard symbol may retrieve word variants: lang yanling yang ((((3.4 best) or (3.4 test))) or (4 best)) kim song ((jeong su) or (cong shu)) ;*.