Perhaps you should try some spelling variations:
nhung chong » nhung phong, nhung phuong, phong chong
nhung cong » dung cong, thong cong, hang cong
hien tach » thien hach, chiet tach, vien bach
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tinh cua » trinh cua, sinh cua, tinh chat
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tach - hanh tinh cua ((nhung chong) OR (nhung cong)) tan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien tach - hanh tinh cua ((nhung chong) OR (nhung cong)) tan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc hien tach - hanh tinh cua ((nhung chong) OR (nhung cong)) tan van ban*.