Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
tieu sach » chieu sach, dien sach, te sach
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
nhung bo » nhung bi, nhung bai, nhung don
van toan » van tuan, van tan, van thanh
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: theo tieu sach - hanh trinh cua ((((nhung bo) or (trong cong))) or (dung cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh trinh cua ((((nhung bo) OR (trong cong))) OR (dung cong)) van toan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh trinh cua ((((nhung bo) or (trong cong))) or (dung cong)) van toan cau*.