Perhaps you should try some spelling variations:
thiet nhung » tuyet nhung, thi nhung, biet nhung
trinh thiet » trinh viet, trinh thi
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh trinh » canh tranh, hanh chinh
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: ho ((chieu xanh) OR (chieu sang)) - hanh trinh thiet nhung ((cong van) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - hanh trinh thiet nhung ((cong van) OR (cong san)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sang)) - hanh trinh thiet nhung ((cong van) or (cong san)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sang)) - hanh trinh thiet nhung ((cong van) or (cong san)) toan cau*.