If you input line 3-20 (this is getRegNum ()), nothing is displayed, i.e. A blank sheet returns, although there is such a number in the database, I enter 495 this doc finds.

public Observable gerResultSearch(List<DocRc> rcList, CharSequence text) { String finalText = text.toString().toLowerCase(); Observable<DocRc> getRegNumObservable = Observable.from(rcList).filter(i -> i.getRegNum().toLowerCase().contains(finalText)).distinct(j -> j.getRegNum()); Observable<DocRc> getRegDateObservable = Observable.from(rcList).filter(i -> i.getRegDate().toLowerCase().contains(finalText)).distinct(j -> j.getRegDate()); Observable<DocRc> getDescriptObservable = Observable.from(rcList).filter(i -> i.getDescription().toLowerCase().contains(finalText)).distinct(j -> j.getDescription()); Observable<DocRc> getOrganShortName = Observable.from(rcList).filter(i -> i.getAuthors().get(0).getContact().getContactOrganizationShortName().toLowerCase().contains(finalText)).distinct(j -> j. getAuthors().get(0).getContact().getContactOrganizationShortName()); Observable<DocRc> getOffPersonFullname = Observable.from(rcList).filter(i -> i.getResolutions().get(0).getContact().getContactOfficialPersonFullname().toLowerCase().contains(finalText)).distinct(j -> j.getResolutions().get(0).getContact().getContactOfficialPersonFullname()); Observable<List<DocRc>> compareObservable = Observable.merge(getRegNumObservable, getRegDateObservable, getDescriptObservable, getOrganShortName, getOffPersonFullname).toList(); return compareObservable.subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()); }

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