Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
bien tinh » bi tinh, yen tinh, diep tinh
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
tang cua » mang cua, hang cua, tang luan
tan toan » tap toan, van toan, dan toan
ho bien » pho bien, hoa bien, so bien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho bien tinh - hanh tang cua nhung cong ((tan toan) or (tan tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho bien tinh - hanh tang cua nhung cong ((tan toan) OR (tan tran)) cau.
• Adding a wildcard symbol may retrieve word variants: ho bien tinh - hanh tang cua nhung cong ((tan toan) or (tan tran)) cau*.