Perhaps you should try some spelling variations:
ylang ylang » yang yang, lang lang
lang ylang » lang lang
a3.2 test » 2.2 test, 4.2 test, 3.3 test
time song » time long, time among, jie song
song chen » hong cheng, song chong, zong cheng
3.1 test » 4.1 test
chen yun » chen yu, chen yue, chen yiqun

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 ylang ylang ((3.2 test) OR (((a3.2 test) OR (3.1 test)))) time song chen yun ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ylang ylang ((3.2 test) or (((a3.2 test) OR (3.1 test)))) time song chen yun ;~".
• Adding a wildcard symbol may retrieve word variants: lang ylang ylang ((3.2 test) or (((a3.2 test) OR (3.1 test)))) time song chen yun ;*.