Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu tach » hieu cach, chiet tach, chieu sach
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
cong canh » cong danh, cong thanh, cong khanh
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
canh van » anh van, can van, cach van

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 tach - canh manh cua nhung cong canh van ban~.
• Adding a wildcard symbol may retrieve word variants: doc hieu tach - canh manh cua nhung cong canh van ban*.