中饱私囊: fill one's own pocket (with public funds); batten on money entrusted to one's care; embezzle; embezzle public funds; line one's pockets with public funds or other people's money
营私: seek private [personal] gain; feather one's nest 短语和例子结党营私 form a clique [band together] for selfish purposes; gang up for selfish interests
结帮营私: band together to seek selfish interests; gang up to pursue selfish interests
舞弊营私: indulge in malpractices and obtain private advantages
营私自肥: feather one's (own) nest to enrich oneself by unlawful means; plan private interest and enrich oneself