Let’s learn about "찾아오다”

1) the word made from :

* 찾다 : find

* 찾아 : 찾(the stem of 찾다) + -아(a connection suffix between two verbs)

* 오다 : come

2) meanings : 

1) visit, look sb up, (informal) drop by[around], (informal) drop in (on)

- 그가 회사로 나를 찾아왔다 : He came to see[visit] me at work.

* 그 : he

* -가 : a suffix makes 그 subjective after a word ends in a vowel

* 회사 : a company

* -로 : to

* 회사로 : at work

* 나 : I; me (non-honourific to younger people or friends)

* -를 : a suffix makes 나 objective after a word ends in a vowel

* 찾아오다 : come to see; visit

* 찾아왔다 : past tense of 찾아오다 by ‘-았’

2) pick up

- 어머니가 세탁물을 찾아오라고 심부름을 시켰다 : Mother sent me on an errand to pick up the laundry.

* 어머니 : my mother

* -가 : a suffix makes 어머니 subjective after a word ends in a vowel

* 세탁 : wash (one's clothes), do the wash[laundry, washing]

* 세탁물 : laundry <— 세탁 + -물(material; item; product)

* -을 : a suffix makes 세탁물 objective after a word ends in a consonant

* 찾아오다 : pick up

* 찾아오라고 : 찾아오다 + -라고(she said)

* -라고 : it is said; some say; it is claimed; people say

* 심부름 : an errand

* -을 : a suffix makes 심부름 objective after a word ends in a consonant

* 시키다 : have (a person do); get (a person to do); order

* 심부름을 시키다 : sent someone on an errand to do

* 시켰다 : past tense of 시키다 by ‘-였’

3) come; set in

- 전국에 강추위가 찾아왔다 : Severe cold set in all over the country.

* 전국 : all over the country

* -에 : a place suffix means "in"

* 강추위 : severe cold <— 강(strong; severe) + 추위(cold)

* -가 : a suffix makes 강추위 subjective after a word ends in a vowel

* 찾아오다 : come; set in

* 찾아왔다 : past tense of 찾아오다 by ‘-았’