Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tieu hanh » dieu hanh, tiem hanh, tien hanh
trong nam » thong nam, trong lam, trong cac
trong tan » trong quan, trong cac, trong ca
tranh su » trinh su, trang su, tranh cua
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 hanh - hanh tranh su dung ((trong nam) or (trong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu hanh - hanh tranh su dung ((trong nam) OR (trong tan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu hanh - hanh tranh su dung ((trong nam) or (trong tan)) toan cau*.