Perhaps you should try some spelling variations:
thiet thanh » thien thanh, thi thanh, viet thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh cua » doanh cua, manh cua
cua hang » cua dang, cua nhung, cua cong
cong dan » cong san, cong tan, cong dong
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: hoc thiet thanh - hanh tranh cua hang ((cong dan) or (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet thanh - hanh tranh cua hang ((cong dan) OR (huong dan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thiet thanh - hanh tranh cua hang ((cong dan) or (huong dan)) toan cau*.