Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong dan » phuong danh, phuong doan, huong dan
hieu sach » chieu sach, hieu cach, dien sach
dan chinh » dang chinh, lan chinh, van chinh
chinh cau » chinh chau, chinh ca, chinh can
doc hieu » toc thieu, hoc thieu, hoc hien
nhan va » nhan tai, nhan dan, nhan tao
han va » hanh va, ban va, dan va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - hanh ((((han va) OR (nhan va))) OR (hang va)) nhung phuong dan chinh cau~.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - hanh ((((han va) or (nhan va))) or (hang va)) nhung phuong dan chinh cau*.