Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
huong ban » huong dan, huong ben, huong lan
trang va » hang va
tran van » luan van
ban than » ban thanh, van thanh, ban hang
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((trang va) or (tran van)) nhung huong ban than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trang va) OR (tran van)) nhung huong ban than ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trang va) or (tran van)) nhung huong ban than ban*.