Perhaps you should try some spelling variations:
economic connections » economic foundations (Expand Search), economic considerations (Expand Search), economic transactions (Expand Search)
economic condition » economic foundations (Expand Search), economic transition (Expand Search), economic cooperation (Expand Search)
economic location » economic education (Expand Search), economic relations (Expand Search), economic migration (Expand Search)
association _0 » association _ (Expand Search), associations _ (Expand Search), association a (Expand Search)
roman economic » roman economy (Expand Search)
conditions 30 » conditions 3 (Expand Search), conditions 160 (Expand Search), conditions 640 (Expand Search)
connections a » connections _ (Expand Search), connection _ (Expand Search), collections a (Expand Search)
connections d » connections _ (Expand Search), connections red (Expand Search), connection _ (Expand Search)
location _0 » location _ (Expand Search), locations _ (Expand Search), vocation _ (Expand Search)
condition 3 » conditions 3 (Expand Search), condition _ (Expand Search), condition c (Expand Search)
_0 b.c » 40 b.c (Expand Search), 10 b.c (Expand Search), 50 b.c (Expand Search)
3 b.c » 63 b.c (Expand Search), 43 b.c (Expand Search), 31 b.c (Expand Search)
a b.c » 4 b.c (Expand Search), 1 b.c (Expand Search)
d b.c » 4 b.c (Expand Search), 1 b.c (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((( rome's economic conditions 30 b.c.-476 a.d. ) or ((( rome's economic location _0 b.c.-476 a.d. ) OR ( rome's economic association _0 b.c.-476 a.d. ))))) or ( rome's economic condition 3 b.c.-476 a.d. ))) or ((( roman economic connections a b.c.-476 a.d. ) or ( roman economic connections d b.c.-476 a.d. ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((( rome's economic conditions 30 b.c.-476 a.d. ) OR ((( rome's economic location _0 b.c.-476 a.d. ) OR ( rome's economic association _0 b.c.-476 a.d. ))))) OR ( rome's economic condition 3 b.c.-476 a.d. ))) OR ((( roman economic connections a b.c.-476 a.d. ) OR ( roman economic connections d b.c.-476 a.d. )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((( rome's economic conditions 30 b.c.-476 a.d. ) or ((( rome's economic location _0 b.c.-476 a.d. ) OR ( rome's economic association _0 b.c.-476 a.d. ))))) or ( rome's economic condition 3 b.c.-476 a.d. ))) or ((( roman economic connections a b.c.-476 a.d. ) or ( roman economic connections d b.c.-476 a.d. ))))".
• Adding a wildcard symbol may retrieve word variants: (((((( rome's economic conditions 30 b.c.-476 a.d. ) or ((( rome's economic location _0 b.c.-476 a.d. ) OR ( rome's economic association _0 b.c.-476 a.d. ))))) or ( rome's economic condition 3 b.c.-476 a.d. ))) or ((( roman economic connections a b.c.-476 a.d. ) or ( roman economic connections d b.c.-476 a.d. ))))*.