You may want to use a combination of OR and AND operators to hone your search. For example:
"yemeni refugees" AND ("financial support" OR "resettlement services")
It is possible to limit search results to only those from government web domains. For example:
"afghan refugees" AND ("temporary protected status" OR TPS) AND site:gov
You can also limit results to specific file types as well (for example powerpoint slides, PDF documents, MS word):
"sudanese refugees" AND ("temporary protected status" OR TPS) AND filetype:pdf site:gov
