Perhaps you should try some spelling variations:
nhung phuong » nhu phuong, truong phuong, bang phuong
dung phuong » dung thuong, bang phuong, dung chung
dong thanh » truong thanh
hien manh » tien manh, hieu manh, hien nhanh
hien hanh » dieu hanh
hanh bang » anh bang, hanh mang, lanh bang
bang luan » tang luan, hang luan, dung luan
thanh cac » hanh cac, thanh bac, thanh ca

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 manh) or (hien hanh)) - hanh bang luan ((nhung phuong) OR (dung phuong)) dong thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien manh) OR (hien hanh)) - hanh bang luan ((nhung phuong) OR (dung phuong)) dong thanh cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien manh) or (hien hanh)) - hanh bang luan ((nhung phuong) OR (dung phuong)) dong thanh cac".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien manh) or (hien hanh)) - hanh bang luan ((nhung phuong) OR (dung phuong)) dong thanh cac*.