Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » hanh chinh
duong manh » duong van
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
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: doi chieu sang - ((hanh trinh) or (canh tranh)) cua nhung ((duong manh) or (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((hanh trinh) OR (canh tranh)) cua nhung ((duong manh) OR (cong thanh)) toan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - ((hanh trinh) or (canh tranh)) cua nhung ((duong manh) or (cong thanh)) toan cau*.