Perhaps you should try some spelling variations:
done missing » one missing, more missing, women missing
yang yang » wang yang, wang yan
yang jie » yang jin, yang jui, yang xi
when so » when do, when co, when soft
so ming » so fing, so ging, su ming
yang yi » yang xi, yang jui
data i » data iv, data im, data 1
i when » ii when, 3 when, 4 when

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: done missing data i when so ming ((((yang yang) OR (yang jie))) OR (((yang di) OR (yang yi)))) ;~.
• Adding a wildcard symbol may retrieve word variants: done missing data i when so ming ((((yang yang) or (yang jie))) or (((yang di) or (yang yi)))) ;*.