 |
| Eficiência: 203 phrases in 26 subjects |
| Agriculture | 4 |
| Brazil | 2 |
| Chemistry | 2 |
| Coal | 1 |
| Communications | 6 |
| Earth sciences | 11 |
| Economy | 5 |
| Electronics | 25 |
| Energy industry | 18 |
| Environment | 14 |
| Finances | 11 |
| Fish farming pisciculture | 1 |
| General | 13 |
| Health care | 7 |
| Industry | 3 |
| Information technology | 2 |
| Life sciences | 6 |
| Materials science | 1 |
| Mathematics | 19 |
| Mechanic engineering | 1 |
| Medical | 5 |
| Metallurgy | 1 |
| Natural sciences | 3 |
| Statistics | 36 |
| Trade unions | 1 |
| Transport | 5 |