Shouldn't it be voastră or ta, not voastre or tale. The thing possessed by YOU (i.e. research) is singular in both English and Romanian (cercetării is the genitive/dative SINGULAR of cercetare).
When the possessive is used twice in a row, and the noun in possessive form is feminine, you have to use the plural form for the possessive pronoun that follows. See this thread for more info.