Perhaps you should try some spelling variations:
economic foundations » economic relations (Expand Search)
economic nations » economic notions (Expand Search), economic relations (Expand Search), economic location (Expand Search)
foundations 100 » foundations 3000 (Expand Search), foundations _ (Expand Search), foundation 1890 (Expand Search)
conditions 1250 » conditions 1150 (Expand Search), conditions 160 (Expand Search), conditions 19th (Expand Search)
rome's economic » roman economic (Expand Search)
home economic » home economics (Expand Search), homo economicus (Expand Search), roman economic (Expand Search)
five economic » its economic (Expand Search), city economic (Expand Search), four economic (Expand Search)
rome economic » roman economic (Expand Search), home economics (Expand Search), power economic (Expand Search)
nations a » nations _ (Expand Search), nations 3 (Expand Search), nations 8 (Expand Search)
1185 b.c » 168 b.c (Expand Search), 116 b.c (Expand Search)
1250 b.c » 1200 b.c (Expand Search), 1550 b.c (Expand Search), 650 b.c (Expand Search)
2175 b.c » 270 b.c (Expand Search), 170 b.c (Expand Search), 515 b.c (Expand Search)
100 b.c » 1300 b.c (Expand Search), 1200 b.c (Expand Search), 200 b.c (Expand Search)
a b.c » 4 b.c (Expand Search), 1 b.c (Expand Search), d 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: (((( five economic conditions ((2175 b.c) OR (1185 b.c)).-476 a.d. ) or ((( rome economic foundations 100 b.c.-476 a.d. ) or ( rome's economic conditions 1250 b.c.-476 a.d. ))))) or ( home economic nations a b.c.-476 a.d. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( five economic conditions ((2175 b.c) OR (1185 b.c)).-476 a.d. ) OR ((( rome economic foundations 100 b.c.-476 a.d. ) OR ( rome's economic conditions 1250 b.c.-476 a.d. ))))) OR ( home economic nations a b.c.-476 a.d. )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( five economic conditions ((2175 b.c) OR (1185 b.c)).-476 a.d. ) or ((( rome economic foundations 100 b.c.-476 a.d. ) or ( rome's economic conditions 1250 b.c.-476 a.d. ))))) or ( home economic nations a b.c.-476 a.d. ))".
• Adding a wildcard symbol may retrieve word variants: (((( five economic conditions ((2175 b.c) OR (1185 b.c)).-476 a.d. ) or ((( rome economic foundations 100 b.c.-476 a.d. ) or ( rome's economic conditions 1250 b.c.-476 a.d. ))))) or ( home economic nations a b.c.-476 a.d. ))*.