Perhaps you should try some spelling variations:
forming volunteer » facing volunteer, governing volunteer, finding volunteers
infants treatment » implants treatment, its treatment, effects treatment
infants regiment » infantry regiment, its regiment
form volunteer » foot volunteer, from volunteer, first volunteer

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

• If you are trying to use Boolean operators, they must be ALL CAPS: 7th new ((form volunteer) OR (forming volunteer)) ((infants regiment) OR (infants treatment)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "7th new ((form volunteer) OR (forming volunteer)) ((infants regiment) or (infants treatment))".
• Adding a wildcard symbol may retrieve word variants: 7th new ((form volunteer) OR (forming volunteer)) ((infants regiment) or (infants treatment))*.