Perhaps you should try some spelling variations:
income distributional » income distribution1.3, income redistribution, more distributional
income distributions » income redistribution, discrete distributions, size distributions
time distributions » time distribution, size distributions, stable distributions
turf developing » stuff developing, future developing, tariff developing
2f developing » f developing, 7 developing, self developing

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: %((((income distributional) OR (income distribution))) OR (((income distributions) OR (time distributions)))) %((2f developing) OR (turf developing)) countries%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((income distributional) or (income distribution))) or (((income distributions) OR (time distributions)))) %((2f developing) or (turf developing)) countries%22".
• Adding a wildcard symbol may retrieve word variants: %((((income distributional) or (income distribution))) or (((income distributions) OR (time distributions)))) %((2f developing) or (turf developing)) countries%22*.