Perhaps you should try some spelling variations:
luan khong » luan phong, luan phuong, luong khong
khong cang » thong cong, hong bang, khong dung
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
chu manh » ho manh, chu van, thu minh
cang san » cong san, cang sau, nang sang
chu han » chu van
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu manh) or (chu han)) - hanh tang luan khong cang san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu manh) OR (chu han)) - hanh tang luan khong cang san van ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chu manh) or (chu han)) - hanh tang luan khong cang san van ban*.