Every idiom doesn't always have an equivalent. Mind the context.

- If you use Windows, you'll get the special characters by pressing the ALT-key and then typing a number with 4 figures on the keypad.

E. g. french :
œ=ALT+0156
æ=ALT+0230

- You can look up the whole chart for Windows and Macintosh on this address.

- On a Android smartphone you just tap and hold the letter of the virtual keyboard and choose among the accented character set.

Tips :

- If you write let fly, you'll get both all entries containing let and all entries containing fly.
- But if you write "let fly", you'll get only the entries containing let fly.
- If you write "move", you'll get not only make a move but also at one remove, among others.
But if you write " move", you'll get on the  move or make a  move among others.