Perhaps you should try some spelling variations:
kyoung yun » kyoung yang, hyoung gun, young eun
yang yang » wang yang, wang yan
your cost » your most, your best, your boss
cost data » test data
young yun » young eun, young young, young men
wing yan » wang yan, wing ian, wing tan
day your » pay your, way your, way you
data co » data coe, data code, data crop

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wing yan) or (((yang yang) or (dong sin)))) day your cost data co ((young yun) OR (kyoung yun)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wing yan) OR (((yang yang) OR (dong sin)))) day your cost data co ((young yun) OR (kyoung yun)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wing yan) or (((yang yang) or (dong sin)))) day your cost data co ((young yun) OR (kyoung yun)) ;".
• Adding a wildcard symbol may retrieve word variants: ((wing yan) or (((yang yang) or (dong sin)))) day your cost data co ((young yun) OR (kyoung yun)) ;*.