Perhaps you should try some spelling variations:
luan thong » luan phong, luan tuong, luat thong
hieu manh » chieu xanh, hieu nganh, hien hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
thong van » trong van, thong va, thong quan
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 thong thong van phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu manh) OR (dieu hanh)) - hanh tang luan thong thong van phan cac.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) or (dieu hanh)) - hanh tang luan thong thong van phan cac*.