Perhaps you should try some spelling variations:
proliferation micropropagation » regeneration micropropagation, prolific micropropagation, production micropropagation
micropropagation a » micropropagation _, micropropagation v, micropropagation i
methods links » methods linda, methods line, methods blind
a dimension » _ dimension, new dimension

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

• Performing a fuzzy search may retrieve terms with similar spellings: proliferation micropropagation a dimension ((methods links) or (methods linear))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: proliferation micropropagation a dimension ((methods links) OR (methods linear)).
• Adding a wildcard symbol may retrieve word variants: proliferation micropropagation a dimension ((methods links) or (methods linear))*.