what were his efforts in peace making?
Thọ and Henry Kissinger engaged in secret talks that eventually led to a cease-fire in the Paris Peace Accords.
Lê Đức Thọ
While Xuân Thuỷ led the official negotiating team representing the Democratic Republic of Vietnam at the talks in Paris, Thọ and U.S. National Security Advisor Henry Kissinger since February 1970 engaged in secret talks that eventually led to a cease-fire in the Paris Peace Accords of 23 January 1973. 
what do winners of the nobel prize receive They are given a sum of money when they receive their prizes, in the form of a document confirming the amount awarded. who receives it? It is awarded "to those who, during the preceding year, have conferred the greatest benefit to humankind”. According to Alfred Nobel's will can you name any controversial recipients of it? The most criticised Nobel Peace Prizes was the one awarded to Henry Kissinger and Lê Đức Thọ why was award presented to the latter? For their efforts in negotiating the Paris Peace Accords what was his profession? He was a Vietnamese revolutionary, general, diplomat, and politician.
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Lê Đức Thọ [SEP] Peace-making, Paris 1968-1973
However, the four party talks did not take place as planned owning to South Vietnamese obscurantism as the South Vietnamese President Nguyễn Văn Thiệu decided to stall talks after receiving messages from Anna Chennault that the Republican candidate Richard Nixon would be more supportive. On 18 January 1969, Tho told Harriman that he regretted his departure, saying: "If you had stopped bombing after two or three months of talks, the situation would have been different now". While Xuân Thuỷ led the official negotiating team representing the Democratic Republic of Vietnam at the talks in Paris, Thọ and U.S. National Security Advisor Henry Kissinger since February 1970 engaged in secret talks that eventually led to a cease-fire in the Paris Peace Accords of 23 January 1973.