  At the LHC, the process of a Higgs boson decaying into bottom or charm quarks
produced in association with a pair of top quarks, ttbarH , allows for an
empirical exploration of the heavy-flavor quark Yukawa couplings to the Higgs
boson. Accordingly, the cross-sections for the $t\bar{t}$ + heavy-flavor
production without the appearance of the Higgs boson have been measured at the
LHC in various phase spaces using data samples collected in pp collisions at
$\sqrt{s}$ = 7, 8 and 13 TeV with the ATLAS and CMS experiments. Flavor ratios
of cross-sections of $t\bar{t}$ + heavy-flavors to $t\bar{t}$ + additional jets
processes are also measured. In this paper, the measured cross-sections and
ratios are reviewed and the prospects with more data are presented.
