What planetary combinations are required in a chart for a person to get settled in a foreign country?
In astrology 3rd house rules short journey, 7th house rules travel, 9th house rules long journey and 12th house(3rd house from 10th house) rules short travel related to job. So any benefic combination of above mentioned lord with 10th house(rules profession) then native will have short or long term travel related to job.
4th house rules mother land, so in case if 4th lord is afflicted then native will not prosper well in the mother land. In such scenario, if 9th house/lord and 12th house/lord gets stronger then native will permanently settle in the foreign country.