| 9 different keyphrases | Search | Percent |
| vq 633 | 1 | 11.1 % |
| www.vzth.cn | 1 | 11.1 % |
| https //ipe.ro/rjef.htm | 1 | 11.1 % |
| www.qgxsyg.cn | 1 | 11.1 % |
| zsnje.cn | 1 | 11.1 % |
| ipe | 1 | 11.1 % |
| romanian journal of economic forecasting online | 1 | 11.1 % |
| www.ddddi.cn | 1 | 11.1 % |
| thumbjn8 | 1 | 11.1 % |
|