The combine for all LoY research recipes must be done in the research book obtained at the lighthouse in gunthak - I think it is called the sorcerer's lexicon for wizards. You can't do these combines in the normal research book.
If you used the right book, all I can think of was you had something stacked, had something in your hand, or used the wrong parchment/quill... The recipe you stated is correct according to eqtraders.com.
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