Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thanh chau » thanh cha, thanh cham, thanh chu
hanh hang » thanh hang, hang hang, hanh han
hang chua » hang cua, zhang chuan, phong chua
chua bang » chu bang, chua nang, chua xang
song dang » song dong, song danh, trong dang
song hang » song hong, song hanh, hong thang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - hanh hang chua bang ((song dang) OR (song hang)) thanh chau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - hanh hang chua bang ((song dang) OR (song hang)) thanh chau".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh hang chua bang ((song dang) OR (song hang)) thanh chau*.