Perhaps you should try some spelling variations:
true costs » true cost, trade costs
things end » thin end, beings end, things era
deck last » der last
dong sign » dong sin, among sign, dong bin
yi yang » yin yang, yi gang, yu yang
dort ii » dort bin, dort hin
fan yi » tan yi, fan ying

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: fan yi yang ((true costs) OR (deck last)) things end ((dort ii) OR (dong sign)) ;~.
• Adding a wildcard symbol may retrieve word variants: fan yi yang ((true costs) or (deck last)) things end ((dort ii) or (dong sign)) ;*.