| Serial Number | Keywords | Count | Centrality |
| 1 | Labor relations | 87 | 0.7 |
| 2 | Trade union | 51 | 0.32 |
| 3 | Harmonious labor relations | 26 | 0.27 |
| 4 | Collective negotiation | 24 | 0.11 |
| 5 | Labor law | 15 | 0.06 |
| 6 | Industrial relations | 12 | 0.04 |
| 7 | Collective bargaining | 12 | 0.09 |
| 8 | Collective labor relations | 11 | 0.05 |
| 9 | Labor disputes | 10 | 0.06 |
| 10 | Collective wage negotiation | 9 | 0.06 |
| 11 | Chinese trade union | 8 | 0.01 |
| 12 | New forms of employment | 8 | 0.09 |
| 13 | Trade union | 6 | 0.03 |
| 14 | Union reform | 6 | 0.07 |