google spreadsheet - Lookup value to match conditions -


i've searched quite while can't find correct answer. image shown below, i'd to find value of book name red book, , category novel. found vlookup can't match multi conditions, please advice function should use?

so like

if (book name == "red book" && category == "novel") {      "in stock" value // 4  }

thanks

enter image description here

try this: 

    =arrayformula(vlookup("red book"&"novel",{a1:a500&b1:b500,c1:c500},2,0))

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