Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
dong long » dong cong, dong dong, dong song
long tinh » cong tinh, trong tinh, luong tin
cong cua » cong cu, dong cua, huong cua
cua dong » chua dong, cua cong, cua dang
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - thanh cong cua dong long tinh toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - thanh cong cua dong long tinh toan ban*.