Oligospermia(Low sperm count & No Motility)

hello doctor,
dear dr.
i am 32 male, being married for 1 years. i have been diagnosed with oligospermia.

i am sending my sperm analysis. please suggest me some medicine. i will be thankful to you. my case history is as below.
i have low sperm count & no motility, i am taking allopathy medicine to cure for approx 6 year. other than this i had done following test
1)semen examination,
2)sperm wash,
3) culture sensitivity,
4) hormonial thyroid which shows sub-clinical hyperthyroidism, also hormonial profile which shows

l.h 10.0miu/ml
f.s.h 9.8 miu/ml
prolactin 5.0ng/ml

also test of testis, which shows (multiple calcified granulomas in both the testies, probably 2degree old treated koch's).
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my report on semen examination

colour:- milky white
volume:- 1.5ml
liquifaction time 20min
viscosity increase
ph 7.6
fructose present

sperm count 20million/ml
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motility --->
---------
grade 1hr 2hr 8hr
1 15% 0% 0%
2 00% 0% 0%
3 00% 0% 0%
4 00% 0% 0%
abnormal forms
total:- 15% head 10%
midpiece 0% tail:- 5%

remark-->oligospermia

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sperm wash
-----------
before wash after
sperm count 20 10
motility 15% 05%

note:grade 3 & grade 4 has 0%.

i have done all test for my wife & all are clear.

i am currently taking treatment & eagerly seeking for a child.
i hope you would provide me with some medicine..
yours faithfully,
vikram