Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
lanh tranh » canh tranh, lan tranh, hanh trinh
hieu cach » hieu cac, chieu sach, hieu ca
cua nhung » va nhung
chong van » thong van, hong van, phong van
doc hieu » toc thieu, hoc thieu, hoc hien
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 chong 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 chong van ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu cach - ((lanh tranh) or (hanh chinh)) cua nhung chong van ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doc hieu cach - ((lanh tranh) or (hanh chinh)) cua nhung chong van ((toan cao) OR (toan ban))*.