Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
doi chiet » doi chieu, doi chi, doi viet
hanh tang » anh tang, hanh tung, nhanh thang
hanh mang » nhanh mang, nhanh lang, thanh hang
cua nhung » va nhung
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - ((hanh tang) OR (((hanh mang) OR (hanh trang)))) cua nhung cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chiet tach - ((hanh tang) or (((hanh mang) OR (hanh trang)))) cua nhung cong tac toan cau~".
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - ((hanh tang) or (((hanh mang) OR (hanh trang)))) cua nhung cong tac toan cau*.