Sino-Vietnamese War happened on 1979-02-17.

Sino-Vietnamese vocabulary is a part of the Vietnamese language. So, yes. Vietnamese know a lot of 'Sino-Vietnamese' as 50-60% of Vietnamese consists of words of Chinese origin or Sino-Vietnamese. For example, the word 'at' is Tai in Vietnamese (from 在 'Zai' in Chinese), to come in Vietnamese is 'Lai' (same as in Chinese 来 'Lai'), country is Quoc in Vietnamese (from 國 Gwok in Cantonese), and the list could co on for hundreds and thousands of pages. Without Sino-Vietnamese vocabulary, Vietnamese wouldn't be a language - it would merely be a skeleton with flesh.

[as Vietnam]

World War I in Vietnam (against France)

World War II in Vietnam (against Japanese Empire) - 1940-1945

First Indochina War (against France) - 1945-1954

Second Indochina War - aka Vietnam War - 1959-1975

Cambodian-Vietnamese War - 1977-1989

Sino-Vietnamese War - 1979

plus

Han-Nanyue War -111 BC

Mongol-Vietnamese War - 1257-1288

Ming-Ho War - 1406-1407

Cham-Vietnamese War - 1471

Trinh-Nguyen War - 1627-1673

Qing-Tayson War - 1788-1789

First Siamese-Vietnamese War - 1831-1834

Second Siamese-Vietnamese War - 1841-1845

and a couple of civil wars

Sino-Nepalese War happened in 1789.

Sino-Xiongnu War happened in -133.