You can implement missing steps with the snippets below:

@Given("^a book with the title 'One good book', written by 'Anonymous', published in (\\d+) March (\\d+)$")
public void a_book_with_the_title_One_good_book_written_by_Anonymous_published_in_March(int arg1, int arg2) throws Throwable {
    // Write code here that turns the phrase above into concrete actions
    throw new PendingException();
}

@Given("^another book with the title 'Some other book', written by 'Tim Tomson', published in (\\d+) August (\\d+)$")
public void another_book_with_the_title_Some_other_book_written_by_Tim_Tomson_published_in_August(int arg1, int arg2) throws Throwable {
    // Write code here that turns the phrase above into concrete actions
    throw new PendingException();
}

@Given("^another book with the title 'How to cook a dino', written by 'Fred Flintstone', published in (\\d+) January (\\d+)$")
public void another_book_with_the_title_How_to_cook_a_dino_written_by_Fred_Flintstone_published_in_January(int arg1, int arg2) throws Throwable {
    // Write code here that turns the phrase above into concrete actions
    throw new PendingException();
}

@When("^the customer searches for books published between (\\d+) and (\\d+)$")
public void the_customer_searches_for_books_published_between_and(int arg1, int arg2) throws Throwable {
    // Write code here that turns the phrase above into concrete actions
    throw new PendingException();
}

@Then("^(\\d+) books should have been found$")
public void books_should_have_been_found(int arg1) throws Throwable {
    // Write code here that turns the phrase above into concrete actions
    throw new PendingException();
}

@Then("^Book (\\d+) should have the title 'Some other book'$")
public void book_should_have_the_title_Some_other_book(int arg1) throws Throwable {
    // Write code here that turns the phrase above into concrete actions
    throw new PendingException();
}

@Then("^Book (\\d+) should have the title 'One good book'$")
public void book_should_have_the_title_One_good_book(int arg1) throws Throwable {
    // Write code here that turns the phrase above into concrete actions
    throw new PendingException();
}