You can concat you query results. For example:
qs = new QuerySpec(wtDocCls);
SearchCondition sc = new SearchCondition(WTDocument.class, WTDocument.NUMBER, SearchCondition.LIKE, "1234%");
qs.appendWhere(sc);
qr1 = PersistenceHelper.manager.find(qs);
SearchCondition sc1 = new SearchCondition(WTDocument.class, WTDocument.NUMBER, SearchCondition.LIKE, "65832A00.%");
qr2 = PersistenceHelper.manager.find(qs1);
qr2.append(qr1.method);
* check the method. It must be like "toObjectVector", don't remember...