Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
canh manh » lanh manh, cach mang, van manh
dung cong » dung trong
van dung » van dong, xay dung, tin dung
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tinh - ((canh manh) or (canh tranh)) van dung cong ban than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - ((canh manh) OR (canh tranh)) van dung cong ban than tap.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - ((canh manh) or (canh tranh)) van dung cong ban than tap*.