Perhaps you should try some spelling variations:
development essays » development early, development esd, development essentials
world lanka » world bank, world banks, world lake
world lack » world black, world jack, worlds black
world back » world black, world bank, world jack

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: ((world lanka) OR (((world lack) OR (world back)))) development essays.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((world lanka) or (((world lack) OR (world back)))) development essays".
• Adding a wildcard symbol may retrieve word variants: ((world lanka) or (((world lack) OR (world back)))) development essays*.