Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh cua » doanh cua, manh cua
thanh cac » hanh cac, thanh bac, thanh ca
cua hang » cua dang, cua nhung, cua cong
cong tam » cong tan, cong nam, dong tam
cong tac » cong ty
than cap » khan cap, thanh lap, than cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - hanh tranh cua hang ((cong tam) OR (cong tac)) ((than cap) OR (thanh cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet danh - hanh tranh cua hang ((cong tam) or (cong tac)) ((than cap) OR (thanh cac))~".
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - hanh tranh cua hang ((cong tam) or (cong tac)) ((than cap) OR (thanh cac))*.