Perhaps you should try some spelling variations:
hien nhanh » thien thanh, tien thanh, dien thanh
dang huong » dang thuong, dang hung, dong huong
hien hanh » dieu hanh
lanh manh » lanh tranh, lan anh, van manh
dang hanh » dang thanh, ban hanh, dang van
manh cua » doanh cua, ban cua
cua dang » cua cong, cua ban
dan hanh » dan khanh, dan thanh, ban hanh

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) or (hien hanh)) - lanh manh cua dang huong ((dan hanh) or (dang hanh)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (hien hanh)) - lanh manh cua dang huong ((dan hanh) OR (dang hanh)) tu.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (hien hanh)) - lanh manh cua dang huong ((dan hanh) or (dang hanh)) tu*.