Please help me or advise in my problem: I look for a job in SG in biomedical field (research associate, medical technologist, chemist and so on), I send my CV for EVERY announcement, I monitor ALL webportals which publish advertisments about job in Singapore, I has polished and improved my CVs till the perfection, attached personified cover letters (not copy/paste, but with specified opening and company title). I have even domestic phone number in my CV.
But there is no response. I had only around several answers with best wishes in further attempts.
I have appropriate qualifications in my field (PhD in Biology, MSc in Chemistry) and professional experience (research and r&d, but not abroad, only within Russia).
For now I even would be agree to accept lower position with lower sallary just to gain my domestic experience and at least the language. But noone wish to invite me...
What is wrong in my methodology? What kinda activities should be added to the work of job seeking? Could it be effective to require the internship with prospective employment? Or it is wrong with my ethnicity?

I would be very much oblidged for the advices!