Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
plus how » us how, bus how, plus new
how bias » home bias, how big, how bad
dann war » wann war, da war, dann hat
war war » wars war, war way, wer war
me a » m a, me _, e a
y a » y la
sin » sign, sind, skin

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: ((yang yang) OR (dong sin)) ((me a) OR (y a)) plus how bias ((war war) OR (dann war)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (dong sin)) ((me a) or (y a)) plus how bias ((war war) or (dann war)) ;*.