Not all strings can be translate via the po file

Hello,

Just tried to translate the plugin to Hebrew.
But some strings keep display in English.

Here are two links:
http://www.079.co.il/questions/%D7%A4%D7%95%D7%A8%D7%9E%D7%99%D7%A7%D7%94-%D7%90%D7%95-%D7%A4%D7%95%D7%9C%D7%99%D7%9E%D7%A8/

http://www.079.co.il/questions/ask/

What can I do?

Thank you