Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh cua » doanh cua, manh cua
tong cong » trong cong, dung cong, dang cong
cong cong » cong dong, trong cong, dung cong
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu tinh - hanh tranh cua ((tong cong) or (cong cong)) ((dan than) or (anh tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh tranh cua ((tong cong) OR (cong cong)) ((dan than) OR (anh tuan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh tranh cua ((tong cong) or (cong cong)) ((dan than) or (anh tuan)) ban*.