Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh mang » nhanh mang, hanh trang, nhanh lang
ho chieu » theo chieu, hoc thieu, doi chieu
va thong » va thuong, va phuong, he thong
cong san » cong tac
tban cau » toan cau, toan cao, ban can
mang va » mang vua, hang va, bang va
ban cau » bang cau, ban can, van cau

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) or (ho chieu)) sach - hanh mang va thong cong san ((tban cau) or (ban cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (ho chieu)) sach - hanh mang va thong cong san ((tban cau) OR (ban cau)).
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (ho chieu)) sach - hanh mang va thong cong san ((tban cau) or (ban cau))*.