Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu tach » lieu thach, hieu cach, tieu danh
cua nhung » va nhung
van thanh » ban thanh, van tuan
canh ban » can ban, canh dan, canh van
van toan » van tuan, van tan, manh toan
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu tach - canh ban cua nhung cong ((((van toan) OR (van thanh))) or (tan tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tach - canh ban cua nhung cong ((((van toan) OR (van thanh))) OR (tan tran)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tach - canh ban cua nhung cong ((((van toan) OR (van thanh))) or (tan tran)) cau*".