Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong manh » cong danh, duong manh, cong thanh
ho thiet » hoc thiet, hoa thiet, so thiet
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho thiet) or (ho chieu)) tach - canh tranh va nhung cong manh ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho thiet) OR (ho chieu)) tach - canh tranh va nhung cong manh ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ((ho thiet) or (ho chieu)) tach - canh tranh va nhung cong manh ((toan cao) or (toan tap))*.