Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu tach » hieu cach, chiet tach, chieu sach
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong anh » cong danh, dong anh, hong anh
tuan cau » toan cau, tuan cu, thuan cam
quan cau » quang cao, toan cau, quan ha

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 tranh cua nhung cong anh ((tuan cau) OR (quan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu tach - canh tranh cua nhung cong anh ((tuan cau) OR (quan cau))".
• Adding a wildcard symbol may retrieve word variants: doc hieu tach - canh tranh cua nhung cong anh ((tuan cau) OR (quan cau))*.