Perhaps you should try some spelling variations:
hanh trinh » canh tranh
nhung cong » dung cong, thong cong, hang cong
vat nhung » va nhung, vap nhung, vai nhung
hoi hieu » hoi phieu, hoi tieu, moi hieu
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau
ho hieu » ho chieu, nho 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 (hoi hieu)) lang - ((hanh trinh) OR (hanh chinh)) vat nhung cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (hoi hieu)) lang - ((hanh trinh) OR (hanh chinh)) vat nhung cong dan chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho hieu) or (hoi hieu)) lang - ((hanh trinh) OR (hanh chinh)) vat nhung cong dan chan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) or (hoi hieu)) lang - ((hanh trinh) OR (hanh chinh)) vat nhung cong dan chan cau*.