台Taivo A Taiwan Mandarin dictionary

獻殷勤

xiànyīnqín

ㄒㄧㄢˋ ㄧㄣㄑㄧㄣˊ

Simplified 献殷勤

1to be particularly attentive to (an attractive young lady or man etc); to fawn upon (an influential politician etc); to court sb's favor; to ingratiate oneself

Keep 獻殷勤 and it comes back until you know it.