Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh manh » hanh mang, lanh manh, hoang manh
dang cong » dung cong
tang hanh » tang thanh, dang hanh, thang thanh
nang hanh » nang thanh, dang hanh, nang hang
cua dang » cua cong, cua ban
lan anh » van anh, tuan anh

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