Perhaps you should try some spelling variations:
khong cang » thong cong, hong bang, khong dung
hanh trinh » canh tranh, hanh chinh
bien tinh » bi tinh, yen tinh, diep tinh
trinh cua » tinh cua, trinh luat, trinh quan
cua khong » hua khong, cua phuong, cua thuong
danh toan » manh toan, anh toan, dang toan
pho bien » phan bien, che bien, so bien
dan toan » van toan, dan than, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: pho bien tinh - hanh trinh cua khong cang ((danh toan) or (dan toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: pho bien tinh - hanh trinh cua khong cang ((danh toan) OR (dan toan)) cau.
• Adding a wildcard symbol may retrieve word variants: pho bien tinh - hanh trinh cua khong cang ((danh toan) or (dan toan)) cau*.