Perhaps you should try some spelling variations:
technical report » technical support, technical experts
assessment egra » assessment ora, assessment dempa, assessment kenya
rich fertilizer » bio fertilizer
assessment el » assessment _, assessment a, assessment model
assessment ii » assessment _, assessment a, assessment ora

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

• Performing a fuzzy search may retrieve terms with similar spellings: rich fertilizer use ((((assessment el) OR (assessment ii))) or (assessment egra)) technical report.~.
• If you are trying to use Boolean operators, they must be ALL CAPS: rich fertilizer use ((((assessment el) OR (assessment ii))) OR (assessment egra)) technical report..
• The words AND, OR and NOT may confuse the search; try adding quotes: "rich fertilizer use ((((assessment el) OR (assessment ii))) or (assessment egra)) technical report.".
• Adding a wildcard symbol may retrieve word variants: rich fertilizer use ((((assessment el) OR (assessment ii))) or (assessment egra)) technical report.*.