Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, dan than, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (hoc hien)) sach - hanh trinh cua nhung cong ((manh toan) or (dan toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc hien)) sach - hanh trinh cua nhung cong ((manh toan) OR (dan toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc hien)) sach - hanh trinh cua nhung cong ((manh toan) or (dan toan)) cau*.