Perhaps you should try some spelling variations:
de elaboracao » de exploracao (Expand Search)
instituto de » institutos de (Expand Search)
de pesquisas » de pesquisa (Expand Search)
em pesquisa » de pesquisa (Expand Search), a pesquisa (Expand Search), da pesquisa (Expand Search)
astronomica- » astronomicas- (Expand Search), astronomia- (Expand Search), astronomico- (Expand Search)
iasc » iac (Expand Search)

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: "instituto de elaboracao internacional ((em pesquisa) OR (de pesquisas)) astronomica- iasc~".
• Adding a wildcard symbol may retrieve word variants: instituto de elaboracao internacional ((em pesquisa) OR (de pesquisas)) astronomica- iasc*.