Function Return HTML

I have function who return html

renderSuggestion(suggestion) {
    const query = this.query;

    if (suggestion.name === "hotels") {
        const image = suggestion.item;
        return this.$createElement('div', image.title);
    } else {
        let str = suggestion.item.name;
        let substr = query;
        return this.$createElement('div', str.replace(substr, `<b>${substr}</b>`));

    }
},

But<b> element not render in browser as html element. Its display like string… How I display this <b> element?

Tnx