Add search links to alternative engines. To be able to continue to search other search engines if Yacy does not give you the answer.

yacy_alternative_search.js

// Go to "Administration > Portal Configuration"
// Replace donation box at "'About' Column" with:

<div style="padding:8px;"><a id="googlesearchlink" href="https://google.com/">Google</a></div>
<div style="padding:8px;"><a id="yandexsearchlink" href="https://yandex.ru/">Yandex</a></div>
<div style="padding:8px;"><a id="wikisearchlink" href="https://wikipedia.org/">Wikipedia</a></div>

<script>
function updateSearchLink(elid, hrefPref, captionPref, srch) {
    var searchlink = document.getElementById(elid);
    searchlink.href = hrefPref + srch;
    searchlink.innerHTML = captionPref + srch;
}

function updateSearchLinks() {
    var srch = document.getElementById("search").value;
    updateSearchLink("googlesearchlink", "https://google.com/search?q=", "Google: ", srch);
    updateSearchLink("yandexsearchlink", "https://yandex.ru/search?text=", "Yandex: ", srch);
    updateSearchLink("wikisearchlink", "https://www.wikipedia.org/search-redirect.php?search=", "Wikipedia: ", srch);
    return true;
}

window.addEventListener("load", function(){
    document.getElementById("search").addEventListener("keypress", updateSearchLinks);
    //document.getElementById("search").addEventListener("change", updateSearchLinks);
    //document.getElementById("Enter").addEventListener("click", updateSearchLinks, true);
    updateSearchLinks();
}, false);
</script>

// And update configuration by pressing "Change Search Page" button.