Perhaps you should try some spelling variations:
hanh trinh » canh tranh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
nho hieu » nha hieu, nho sieu, nhu hieu
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu
ho hieu » ho chieu, hoi hieu, co hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho hieu) OR (nho hieu)) quang - ((hanh trinh) or (hanh chinh)) cua nhung cong tan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (nho hieu)) quang - ((hanh trinh) OR (hanh chinh)) cua nhung cong tan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho hieu) OR (nho hieu)) quang - ((hanh trinh) or (hanh chinh)) cua nhung cong tan phan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) OR (nho hieu)) quang - ((hanh trinh) or (hanh chinh)) cua nhung cong tan phan cau*.