Perhaps you should try some spelling variations:
gene line » gene clone, fine line, gene gene
one agent » one parent, one event, one gene
lang yan » wang yan, wang yang, zhang yan
can only » can one
only abu » only about, only a
yan zi » yan zhi, yuan zi, ban zi
zi a » i a, ii a, ai a

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: lang yan zi a ((gene line) OR (one agent)) can only abu ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan zi a ((gene line) or (one agent)) can only abu ;*.