Perhaps you should try some spelling variations:
"evapotranspiration daily index" » "evapotranspiration soil index", "evapotranspiration canopy index", "evapotranspiration using index", "evapotranspiration family index", "evapotranspiration daily mindset"
"evapotranspiration soils index" » "evapotranspiration soil index", "evapotranspiration models index", "evapotranspiration covers index", "evapotranspiration soils under"

Try widening your search to All Fields.

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"evapotranspiration daily index\") OR (\"evapotranspiration soils index\"))".
• Removing quotes may allow a broader search: (( evapotranspiration daily index ) OR ( evapotranspiration soils index )).
• Adding a wildcard symbol may retrieve word variants: (("evapotranspiration daily index") OR ("evapotranspiration soils index"))*.