Verified answer

しらべる and ちょうさする have the same meaning in general.

But right translations are a little different.

しらべる can be translated into “look into (a dictionary)”, but ちょうさする can’t be.

e.g.

わたしは じしょで しらべる。 = natural

わたしは じしょで ちょうさする = unnatural

If you want to know in detail, please add detail.

If I have time and ability I will じしょで しらべます。(Not じしょで ちょうさします)

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Addition on 8:00am May 1st (JST (MST+16h))

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Accoring to my dictionary English for ちょうさする are;

・bring something to book

・call in the FBI

・check over

・conduct search

・do a search

・do one's homework

・find out

・get something sussed

・botanize

・cruise

・herborize

・inspect

・investigate

・prospect (for oil etc.)

・research

・search

・sift

・survey

・suss

・cruise

・inquire

・investigate

・research

・sift

しらべる for English are;

・check it out

・do a search

・find out

・go over

・look up

・make a sweep

・take a look

・turn up

・consult（a dictionary etc.）

・examine

・probe

・scan

・suss

・inquire

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Anyway it depends on the context.

"しらべる　調べる" and "ちょうさする　調査する" are both verbs meaning "to investigate."

Just "ちょうさ 調査" is a noun.

"まなぶ 学ぶ" and "がくしゅうする 学習する" both mean "to learn."

Just "がくしゅう 学習" is a noun.

Noun plus "- する" makes the verb, but Japanese verbs aren't limited to this pattern.