Perhaps you should try some spelling variations:
luan trong » quan trong, luat trong, luan tuong
hieu manh » chieu xanh, hieu nganh, hien hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong van » cong vang, cong san, song van
van phan » van phong, van thanh, luan phan
phan cac » nhan cach, phan dau, phan lap

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 manh) OR (dieu hanh)) - hanh tang luan trong cong van phan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu manh) OR (dieu hanh)) - hanh tang luan trong cong van phan cac".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) OR (dieu hanh)) - hanh tang luan trong cong van phan cac*.