Perhaps you should try some spelling variations:
task helping » a helping, man helping, work helping
genome scale » income scale, genome can
yan helping » man helping, a helping
scale wage » scale water, scale case, scale change
wage young » jae young
young ages » young age
wang » wing, wan

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 OR lang) ((yan helping) OR (task helping)) human genome scale wage young ages ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) ((yan helping) OR (task helping)) human genome scale wage young ages ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or lang) ((yan helping) OR (task helping)) human genome scale wage young ages ;*.