Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh trinh » canh tranh
thanh toan » thanh hoa, thanh san, tinh toan
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
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 trinh) or (hanh chinh)) cua ((nhung cong) OR (dung cong)) thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((hanh trinh) OR (hanh chinh)) cua ((nhung cong) OR (dung cong)) thanh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((hanh trinh) or (hanh chinh)) cua ((nhung cong) OR (dung cong)) thanh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh trinh) or (hanh chinh)) cua ((nhung cong) OR (dung cong)) thanh toan ban*.