Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
hanh trinh » hanh chinh
hanh tranh » hanh trang, lanh tranh, nhanh thanh
cac phuong » cac truong
hieu lang » chieu sang, hieu quang, nhieu tang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho 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 lang - ((((hanh tranh) OR (hanh trinh))) or (canh tranh)) cac phuong cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((((hanh tranh) OR (hanh trinh))) OR (canh tranh)) cac phuong cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((((hanh tranh) OR (hanh trinh))) or (canh tranh)) cac phuong cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((((hanh tranh) OR (hanh trinh))) or (canh tranh)) cac phuong cong dan toan ban*.