You can search that much with pacman -Ss <pkgNameToSearch> right from your terminal.
sudo pacman -S calf lsp-plugins-lv2 zam-plugins-lv2 mda.lv2 yelp
If you get some strange error messages related to mirror use garuda-update instead,
garuda-update -- calf lsp-plugins-lv2 zam-plugins-lv2 mda.lv2 yelp