Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, nhung don
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
san toan » van toan, dan toan, manh toan
toan tap » toan ban

You may be able to get more results by adjusting your search query.

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