How long have you been searching for a job? Why haven't you received a job offer? what is a best answer for this equation?

It is always better to answer this question with "I just started looking" but this is not always possible, particularly if your resume indicates you've been unemployed for the last six months.  If you can't hide the fact that your job search has been taking awhile, then state you're being selective about whom you will work for.  Of course, stating this might prompt the interviewer to ask, "What offers have you turned down?" which could land you in hot water if you haven't actually received any job offers. (It isn't a good idea to lie in answering this latter question.)   A bad economy and a crowded market are good reasons one might have trouble finding a job.  However, be aware that many interviewers will hold this against you even if the job market was very bad and many people were having trouble finding employment.  

I am searching for a job from ten month and I received two job offers