Perhaps you should try some spelling variations:
germany learner » german learner, germany learning
learner wage » learners make, gartner wage, learned case
dirk 2012 » drk 2012, risk 2012
wage pain » wage gain, wage gains, wage latin
long gun » long run, long du, long han
wai yan » wang yan, wei yang
yang yi » yang xi, 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: ((((wai yan) OR (yang yi))) OR (yang di))dirk 2012 germany learner wage pain long gun ;~.
• Adding a wildcard symbol may retrieve word variants: ((((wai yan) or (yang yi))) or (yang di))dirk 2012 germany learner wage pain long gun ;*.