Perhaps you should try some spelling variations:
lanh tranh » canh tranh, lan tranh, hanh trinh
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong van » cong vang, song van, cong tan
cong san » cong tac
toan ban » van ban
ha tinh » va tinh, may tinh

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