/ http://www.slideshare.net/images/logo.gif / ΊέΊέί£Share feed for ΊέΊέί£shows by User: nhatnghiatran https://public.slidesharecdn.com/v2/images/profile-picture.png NgΖ°Ζ‘Μ€i khó hiΓͺΜ‰u, khó tính, khó Ζ°a, khó gΓ’Μ€n... ──▓▓▓▓───▓▓▓▓▓▓▓▓▓▓▓───▓▓▓▓ ──▓▓▒▒▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▓▓ ──▓▓▒▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▓▓ ───▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓ β”€β”€β”€β”€β”€β–“β–“β–“β–“β–“β–ˆβ–ˆβ–ˆβ–“β–“β–“β–“β–“β–“β–“β–ˆβ–ˆβ–ˆβ–“β–“β–“β–“β–“ β”€β”€β”€β”€β–“β–“β–“β–“β–“β–“β–ˆβ–ˆβ–ˆβ–“β–“β–“β–“β–“β–“β–“β–ˆβ–ˆβ–ˆβ–“β–“β–“β–“β–“β–“ β”€β”€β”€β”€β–“β–“β–“β–“β–“β–“β–“β–“β–’β–’β–’β–ˆβ–ˆβ–ˆβ–’β–’β–’β–“β–“β–“β–“β–“β–“β–“β–“ ──