求翻译：东盟自1967年成立以来，虽然推出了一些优惠贸易安排计划，但因各国考虑自身利益较多，该联盟并未带来预期的效果。是什么意思？

ASEAN since its inception in 1967, although the introduction of a number of preferential trade arrangements, but more countries to consider their own interests, the alliance did not bring the desired results.

ASEAN since 1967, although since its establishment has launched a number of preferential trade arrangements and plans for States to consider their own interests, but more, the union has not brought the expected results.

The Association of Southeast Asian Nations had been established since 1967, although has promoted some preferential benefit trade arrangement plan, because but the various countries considered own benefit are many, this alliance brings the anticipated effect by no means.

Since its inception in 1967, ASEAN, although launched a number of preferential trading schemes of arrangement, but because more countries to consider their own interests, the Union did not bring the desired results.