Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh mang » nhanh mang, hanh trang, nhanh lang
cua trung » cua truong, xuan trung, cua nhung
cong dung » cuong dung, cong dong, cong luong
dung danh » dung doanh, dung dan, cuong danh
danh cham » hanh cham, doanh chau, thanh cham
doc hieu » toc thieu, hoc thieu, hoc hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu nganh - hanh mang ((cua trung) or (va nhung)) cong dung danh cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - hanh mang ((cua trung) OR (va nhung)) cong dung danh cham*.