Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh trang » thanh trung, canh tranh, minh trang
nhung cong » dung cong, thong cong, hang cong
chau tinh » cuu tinh, ha tinh, cua tinh
cong tac » cong ty
toan cao » toan ban
toan tap » toan ban
ho chau » ha chau, ho chu, o chau

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: ho chau tinh - ((hanh trang) OR (hanh trinh)) va nhung cong tac ((toan cao) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chau tinh - ((hanh trang) OR (hanh trinh)) va nhung cong tac ((toan cao) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ho chau tinh - ((hanh trang) OR (hanh trinh)) va nhung cong tac ((toan cao) or (toan tap))*.