Perhaps you should try some spelling variations:
affect fertilizer » africa fertilizer, different fertilizer
technical experts » technical expertise
scale assessment » scale assessments, cycle assessment, side assessment
rich fertilizer » rice fertiliser, africa fertilizer, bio fertilizer
4 technical » 2 technical, 3 technical, 4.1 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 (rich fertilizer)) scale assessment 4 technical experts.~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((affect fertilizer) OR (rich fertilizer)) scale assessment 4 technical experts..
• Adding a wildcard symbol may retrieve word variants: ((affect fertilizer) or (rich fertilizer)) scale assessment 4 technical experts.*.