Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh manh » lanh manh, canh tranh, cach mang
manh quan » manh tuan, anh quan, minh quang
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((hien hanh) or (dieu hanh))) or (chieu tinh)) - canh manh quan dung cong tan tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((hien hanh) OR (dieu hanh))) OR (chieu tinh)) - canh manh quan dung cong tan tran cau.
• Adding a wildcard symbol may retrieve word variants: ho ((((hien hanh) or (dieu hanh))) or (chieu tinh)) - canh manh quan dung cong tan tran cau*.