Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong lang » cong vang, cong luong, cong quang
he nhieu » hop nhieu, phu nhieu, he dieu
cong van » cong vang, song van, cong tan
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: he nhieu tang - hanh trinh cua nhung ((((cong van) OR (cong san))) or (cong lang)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: he nhieu tang - hanh trinh cua nhung ((((cong van) OR (cong san))) OR (cong lang)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "he nhieu tang - hanh trinh cua nhung ((((cong van) OR (cong san))) or (cong lang)) toan cau".
• Adding a wildcard symbol may retrieve word variants: he nhieu tang - hanh trinh cua nhung ((((cong van) OR (cong san))) or (cong lang)) toan cau*.