Table 5.
Top 36 keywords for COVID-19–related topics during the COVID-19 pandemic in Vietnam from December 1, 2019, to November 13, 2020.
| Rank | Word | Frequency, n |
| 1 | epidemic | 16,373,688 |
| 2 | COVID-19 | 10,720,319 |
| 3 | patient | 9,838,764 |
| 4 | quarantine | 9,783,246 |
| 5 | medical | 9,349,795 |
| 6 | go | 8,428,703 |
| 7 | hospital | 8,257,058 |
| 8 | Vietnam | 7,789,027 |
| 9 | case | 7,643,082 |
| 10 | disease | 6,397,632 |
| 11 | Danang | 5,621,518 |
| 12 | against | 5,208,937 |
| 13 | city | 5,066,441 |
| 14 | infected | 4,734,692 |
| 15 | virus | 4,099,245 |
| 16 | situation | 3,950,498 |
| 17 | information | 3,854,982 |
| 18 | province | 3,850,230 |
| 19 | prevention | 3,692,883 |
| 20 | citizen | 3,357,150 |
| 21 | mask | 3,316,868 |
| 22 | way | 3,310,041 |
| 23 | test | 2,784,690 |
| 24 | contact | 2,764,565 |
| 25 | government | 2,705,459 |
| 26 | Hanoi | 2,422,218 |
| 27 | family | 2,366,785 |
| 28 | money | 2,177,978 |
| 29 | coronavirus | 2,039,959 |
| 30 | The US | 1,903,865 |
| 31 | vehicle | 1,842,155 |
| 32 | result | 1,821,271 |
| 33 | treatment | 1,790,499 |
| 34 | Bach Mai hospital | 1,663,212 |
| 35 | together | 1,654,416 |
| 36 | get sick | 1,475,917 |