| do your utmost(verb, expression, idiom, work, struggle) |
| dog(verb, bother, annoy, harass, pursue) |
| dragnet(verb, follow, pursue, investigate, scratch) |
| dredge(action, investigate, dig, research, probe) |
| endeavor(verb, work, struggle, try, seek) |
| endure(verb, advance, continue, extend, stick) |
| essay(verb, work, struggle, try, seek) |
| excavate(action, investigate, dig, research, probe) |
| exert oneself(verb, expression, work, struggle, try) |
| explore |
| fan(verb, follow, pursue, investigate, scratch) |
| fight(verb, work, struggle, try, endure) |
| find(verb, pursue, seek, search, chase) |
| fish(verb, disturb, follow, pursue, search) |
| fish for(verb, expression, phrasal verb, follow, pursue) |
| follow(verb, pursue, seek, investigate, root) |
| follow through(verb, expression, phrasal verb, continue, endure) |
| frisk(verb, check, examine, look, seek) |
| give chase(verb, expression, bother, annoy, harass) |
| go after(verb, expression, phrasal verb, work, follow) |