Perhaps you should try some spelling variations:
hieu nganh » hiem ngan, hieu manh, nghiep nganh
vien nganh » vien thanh
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
cong san » cong tac
hanh cat » hanh cac, hanh luat, nhanh cay
khan cap » khan ap, than cap, khoan cam

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) OR (vien nganh)) - hanh tang cua dung cong san ((hanh cat) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (vien nganh)) - hanh tang cua dung cong san ((hanh cat) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu nganh) OR (vien nganh)) - hanh tang cua dung cong san ((hanh cat) or (khan cap))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) OR (vien nganh)) - hanh tang cua dung cong san ((hanh cat) or (khan cap))*.