/ http://www.slideshare.net/images/logo.gif / ΊέΊέί£Share feed for ΊέΊέί£shows by User: VfreshPL https://cdn.slidesharecdn.com/profile-photo-VfreshPL-48x48.jpg?cb=1523337586 [KhoαΊ£ng cΓ‘ch]...... vΓ  ..... [thời gian] . . Chỉ lΓ  mα»™t bΓ i . { trαΊ―c nghiệm } Để xem tΓ¬nh yΓͺu cΓ³ thể Δ‘i được . ......[bao xa] ......... vΓ  .........tα»“n tαΊ‘i được....... . . . [bao lΓ’u] . . . β–‘β–€β–ˆβ–€β–‘β–‘β–‘β–€β–ˆβ–€β–‘β–€β–ˆβ–€β–‘β–€β–ˆβ–€β–‘β–‘β–€β–ˆβ–€β–€β–€β–€β–ˆβ–‘ β–‘β–‘β–ˆβ–‘β–‘β–‘β–‘β–‘β–ˆβ–‘β–‘β–‘β–ˆβ–‘β–„β–€β–‘β–‘β–‘β–‘β–‘β–ˆβ–‘β–‘β–‘β–‘β–‘β–‘ β–‘β–‘β–ˆβ–‘β–‘β–‘β–‘β–‘β–ˆβ–‘β–‘β–‘β–ˆβ–€β–„β–‘β–‘β–‘β–‘β–‘β–‘β–ˆβ–„β–„β–„β–‘β–‘β–‘ β–‘β–‘β–ˆβ–‘β–‘β–‘β–‘β–‘β–ˆβ–‘β–‘β–‘β–ˆβ–‘β–‘β–€β–„β–‘β–‘β–‘β–‘β–ˆβ–‘β–‘β–‘β–‘β–‘β–‘ β–‘β–„β–ˆβ–„β–„β–ˆβ–‘β–„β–ˆβ–„β–‘β–„β–ˆβ–„β–‘β–‘β–„β–ˆβ–„β–‘β–„β–ˆβ–„β–„β–„β–„β–ˆβ–‘ β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘β–‘