Perhaps you should try some spelling variations:
yang yanling » wang yanling, wang yangming, zhang yunling
wang yang » wang yan, wang liang, wang yanling
think tan » think tank, think tanks, think a
2.4 test » 2.4 trust
2.4 pest » 2.4 past, 2.4 best, 2.4 post
hong sar » kong sar, hong seo, hong tan
4 best » 3 best

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: wang yang yanling ((((2.4 test) OR (2.4 pest))) OR (4 best)) think tan hong sar ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang yanling ((((2.4 test) or (2.4 pest))) or (4 best)) think tan hong sar ;*.