Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » hanh chinh
lieu tinh » trieu tinh, diep tinh, bien tinh
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((lieu tinh) or (chieu sach)) - ((hanh trinh) or (canh tranh)) cua dung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((lieu tinh) OR (chieu sach)) - ((hanh trinh) OR (canh tranh)) cua dung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((lieu tinh) or (chieu sach)) - ((hanh trinh) or (canh tranh)) cua dung cong tac toan cau*.