Perhaps you should try some spelling variations:
affect fertilizer » africa fertilizer, different fertilizer
dose assessment » ante assessment, life assessment, side assessment
bio fertilizer » bio fertilizers, from fertilizer, rich fertilizer
assessment i » assessment ii, assessment 1, assessment 3
i technical » ii technical, vi technical, 2 technical

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) or (bio fertilizer)) dose assessment i technical expertise.~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((affect fertilizer) OR (bio fertilizer)) dose assessment i technical expertise..
• Adding a wildcard symbol may retrieve word variants: ((affect fertilizer) or (bio fertilizer)) dose assessment i technical expertise.*.