Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh manh » hanh mang, hoang manh, thanh minh
lanh manh » lanh tranh, lan anh, van manh
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong tan » cong tac, cong san, cong thanh
tan hanh » tan thanh, tang hanh, toan hanh
hanh tu » anh tu, danh tu

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