Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
hieu sach » chieu sach, hieu cach, dien sach
trong van » trong cac
doc hieu » toc thieu, hoc thieu, hoc hien
tang van » dang van, hoang van, tang luan
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan

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 sach - hanh ((tang van) OR (trong van)) nhung huong ((dan toan) or (van tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - hanh ((tang van) OR (trong van)) nhung huong ((dan toan) OR (van tuan)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sach - hanh ((tang van) OR (trong van)) nhung huong ((dan toan) or (van tuan)) ban*".