Perhaps you should try some spelling variations:
"plant genome research." » "plant genomic research.", "plant genomics research.", "plant some research."
"plant crane research." » "plant change research.", "plant care research.", "plant case research.", "plant crude research.", "plant cape research."
"plant gene research." » "plant gender research.", "plant zone research.", "plant genetic research.", "plant genomes research."
"plant rape research." » "plant grape research.", "plant care research.", "plant case research.", "plant cape research.", "plant rnase research.", "plant age research."
plant base » plant based, plant bases, plant case

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("plant gene research.") or ("plant genome research."))) or ((("((plant base) or (plants case)) research.") or ((("plant crane research.") or ("plant rape research."))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("plant gene research.") OR ("plant genome research."))) OR ((("((plant base) or (plants case)) research.") OR ((("plant crane research.") OR ("plant rape research.")))))).
• Removing quotes may allow a broader search: (((( plant gene research. ) or ( plant genome research. ))) or ((( ((plant base) or (plants case)) research. ) or ((( plant crane research. ) or ( plant rape research. )))))).
• Adding a wildcard symbol may retrieve word variants: (((("plant gene research.") or ("plant genome research."))) or ((("((plant base) or (plants case)) research.") or ((("plant crane research.") or ("plant rape research."))))))*.