Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » hanh chinh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
van toan » van tuan, van tan, van thanh
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: ho chieu tinh - ((canh tranh) or (hanh trinh)) cua nhung cong ((van toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - ((canh tranh) OR (hanh trinh)) cua nhung cong ((van toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - ((canh tranh) or (hanh trinh)) cua nhung cong ((van toan) or (dan than)) cau*.