Noto Serif in action on thuvantran.fr

.header-1 { font-family: "Noto Serif", serif; font-size: 35.2px; font-style: normal; font-weight: 400; letter-spacing: 1.408px; line-height: 42.24px; text-transform: none; color: #000000; }
.content-1 { font-family: "Noto Serif", serif; font-size: 25.344px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 35.1978px; text-transform: none; color: #000000; }
Noto Serif is available from Font Squirrel and Google Web Fonts.

Try this combination out in Pair and Compare.
Found by @mikesten on 12 Jun 2018.

Liked by:
@mikesten @Joshua_D_

Noto Serif