Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
hieu nganh » vien nganh, hiem ngan, hieu manh
phuong dan » phuong danh, phuong doan, huong dan
trong van » trong cac
doc hieu » toc thieu, hoc thieu, hoc hien
tang van » dang van, hoang van, tang luan
hanh tap » han tap, hanh tai, hanh cap
hang tap » hang tai, han tap, hang tmcp

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 nganh - hanh ((tang van) or (trong van)) nhung phuong dan ((hanh tap) OR (hang tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - hanh ((tang van) OR (trong van)) nhung phuong dan ((hanh tap) OR (hang tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu nganh - hanh ((tang van) or (trong van)) nhung phuong dan ((hanh tap) OR (hang tap))".
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - hanh ((tang van) or (trong van)) nhung phuong dan ((hanh tap) OR (hang tap))*.