Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh trinh » canh tranh
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
hieu lang » chieu sang, nhieu tang, hieu van
cua nhung » va nhung
toan ban » van ban

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) OR (hieu quang)) - ((hanh trinh) or (hanh chinh)) cua nhung cong thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu quang)) - ((hanh trinh) OR (hanh chinh)) cua nhung cong thanh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (hieu quang)) - ((hanh trinh) or (hanh chinh)) cua nhung cong thanh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (hieu quang)) - ((hanh trinh) or (hanh chinh)) cua nhung cong thanh toan ban*.