Perhaps you should try some spelling variations:
africa fertilizer » affect fertilizer, rich fertilizer, from fertilizer
technical report » technical support, technical experts
fertilizer type » fertilizer use
assessment egra » assessment ora, assessment dempa, assessment kenya
assessment esw » assessment east, assessment el, assessment _

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

• Performing a fuzzy search may retrieve terms with similar spellings: africa fertilizer type ((assessment esw) OR (assessment egra)) technical report.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "africa fertilizer type ((assessment esw) OR (assessment egra)) technical report.".
• Adding a wildcard symbol may retrieve word variants: africa fertilizer type ((assessment esw) OR (assessment egra)) technical report.*.