| Problem | |
| comp., MS | 問題回報 |
| problem | |
| gen. | 麻烦 |
| archit. | 课题; 难题 |
| bridge. | 题目 |
| chess.term. | 棋式; 棋题 |
| commer. | 问题 |
| el. | 疑问 |
| market. | 次数优化问题 |
|
combinational : 37 phrases in 10 subjects |
| Agriculture | 3 |
| Computers | 1 |
| Economics | 1 |
| Electronics | 6 |
| Information technology | 7 |
| Oil / petroleum | 1 |
| Programming | 1 |
| Statistics | 2 |
| Technology | 12 |
| Telecommunications | 3 |