Indeed its possible to know everything in vedic astrology . all it takes faith , dedication ,divine bliss .
your q is very simple yet its very broad subject , we have to look for all , from house lordship to sign ,rasi placement , planets strength and weakness , and its influence on dasa lord . etc .
for you sun is 6th lord , if you know little bit of astro then dasa of 6th , 8th 12th is evil and wont do any good . only exception they should sit in another evil house .( like 6th lord in 8th vice versa ) then only it goes under name of vibareeta raja yoga , sudden unexpected fortune in life . that too after one big trauma . rest other combinations will have to undergo karma .
for you sun as 6th lord palced in 2 gives forgein settlement , eye related troubles , conflicts in family life , financial problems . not only that , sun is with venus 3rd and 8th lord, mercury 4th and 7th . so you see changes in these things , again eye trouble , forgein settlement , money problem . planets associated closely with sun get combust . for u venus and mercury is with sun . so they lost their power . but 6th lord exalted gives you undefeatable courage , powers , whatever it comes you defeat everything and overcome that . so dont worry . also another thing is you get head related problems , it may minor to major . so take care that . bear this sun dasa with courage , after that your moon dasa is very good , he is yoga karaga for your lagna , success comes from all front . life is mixed of ups and down , so accept it and play your role . participating is better than running away from game . so see this sun dasa testing period that god has going to give much happiness in future . ..
you aleady went through venus dasa so no need to tell abt it , as lord of 3rd and 8th you may suffered lot regarding money , relationship etc .
dasa gives results only what/ which planet lord its connected with . only those things happen . for you sun is connected with 2nd, 6th , 8th, 7th ,3rd and 4th and saturn lord of 11th&12th lord . so you get these things only .
your 10th lord is in 10 house , good so no major problems in prof except few changes and indoor politics .
i forgot to tell one thing your jupiter aspect your 2nd house so you are protected from major troubles . dont worry its nice . your whole life is in forgein land only . may be working in private concern , except occassional trouble , no big problem ..
Offcourse he does , but at same time domestic quarrels or wife health may get affected . take care of that . or even temporary separation may occur , like your spouse go for professional related tour or stay in her parents house for some period . like that . instead of divorce , sun gives temporary problems between couples , but in the end everything will be fine ..