Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
khau sach » hau sach, khoa sach, pham sach
hanh mang » nhanh mang, hanh trang, nhanh lang
cua nhung » va nhung
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
rau sach » cau sach, hau sach, nam sach
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho ((rau sach) OR (khau sach)) - ((hanh mang) or (hanh trinh)) cua nhung cong hach toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho ((rau sach) OR (khau sach)) - ((hanh mang) OR (hanh trinh)) cua nhung cong hach toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho ((rau sach) OR (khau sach)) - ((hanh mang) or (hanh trinh)) cua nhung cong hach toan cau".
• Adding a wildcard symbol may retrieve word variants: cho ((rau sach) OR (khau sach)) - ((hanh mang) or (hanh trinh)) cua nhung cong hach toan cau*.