strange fonts in posts

dear all,

I have the following text with strange fonts, which were all right at the time of post creation but now its not readable with addition of some strange characters.

here are some examples:

http://myithut.com/category/oracle-sql/sql-commands/
line no. 5 Data Definition Language (DDL)
line no. 13 Data Manipulation Language (DML)

http://myithut.com/category/oracle-sql/sql-where/
line no. 1 SQL statement – SQL SELECT
line no. 3 so instead, we’ll take a
line no. 5 WHERE Clause – Single

Regards: