Perhaps you should try some spelling variations:
affect fertilizer » africa fertilizer, different fertilizer
fertilizer trade » fertilizer trials, fertilizer type, fertilizer usage
technical report » technical support, technical experts, technical review
assessment esw » assessment east, assessment e6, assessment egra
assessment el » assessment e6, assessment 1, assessment 3

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

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