Perhaps you should try some spelling variations:
nhung hong » nhung chong, nhung huong, nhung phong
lanh tranh » canh tranh, lan tranh, hanh trinh
hieu cach » hieu cac, chieu sach, hieu ca
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
hong van » hoang van, thong van, phong van
toan cao » toan tap
toan ban » van ban

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 cach - ((lanh tranh) or (hanh chinh)) cua nhung hong van ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu cach - ((lanh tranh) OR (hanh chinh)) cua nhung hong van ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doc hieu cach - ((lanh tranh) or (hanh chinh)) cua nhung hong van ((toan cao) or (toan ban))*.