Perhaps you should try some spelling variations:
leap machine » clean machine, deep machine, meat machine
machine aids » machine minds, machine ages, machine arts
long green » going green, long grain
green leap » green clean, green deal, great leap
yang jun » yang jui, pang jun, yang jin
yang xi » yang di, yang jui
yang yi » yang di, yang jui

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: long green leap machine aids ((((yang xi) OR (yang yi))) OR (yang jun)) (lang OR wan) hua ;~.
• Adding a wildcard symbol may retrieve word variants: long green leap machine aids ((((yang xi) or (yang yi))) or (yang jun)) (lang or wan) hua ;*.