Perhaps you should try some spelling variations:
hanh trinh » canh tranh
chau tinh » ha tinh, cua tinh, cac tinh
quan hanh » quan thanh, quang thanh, quang khanh
hanh cong » thanh cong, hang cong, hanh dong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan tu » phan tu, han tu, chon tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chau tinh) OR (cuu tinh)) - ((hanh trinh) or (hanh chinh)) quan hanh cong dan chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chau tinh) OR (cuu tinh)) - ((hanh trinh) OR (hanh chinh)) quan hanh cong dan chan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chau tinh) OR (cuu tinh)) - ((hanh trinh) or (hanh chinh)) quan hanh cong dan chan tu".
• Adding a wildcard symbol may retrieve word variants: ho ((chau tinh) OR (cuu tinh)) - ((hanh trinh) or (hanh chinh)) quan hanh cong dan chan tu*.