The entire (formal): toàn, toàn bộ

Toàn and toàn bộ mean "the whole, the entire" in formal writing. Toàn joins a Sino-Vietnamese word, most often one for a territory or a group, and makes a fixed phrase: toàn quốc (nationwide), toàn thành phố (the whole city), toàn dân (the whole population), toàn cầu (global), toàn ngành (the whole industry). A few others are common too: toàn thân (the whole body), toàn văn (the full text), toàn thời gian (full-time). Toàn bộ goes before an ordinary noun and means all of it, nothing left out: toàn bộ số tiền (the full amount), toàn bộ hồ sơ (all the documents), toàn bộ nhân viên (all the staff). After a verb, toàn bộ means completely: bị phá hủy toàn bộ, destroyed completely.

You'll meet both all the time in news reports and official notices: prices adjusted trên toàn quốc, documents submitted toàn bộ online.

In conversation, "the whole" is cả: cả nước (the whole country), cả nhà (the whole family), cả cái bánh (the whole cake).

Be careful with toàn in speech. Before an ordinary noun it means "nothing but": Tủ lạnh toàn bia, there's nothing but beer in the fridge. So toàn in a fixed phrase like toàn quốc is the formal "whole", while toàn + an everyday noun in speech means "nothing but".