Perhaps you should try some spelling variations:
quang nhung » quang hung, quan nhung, quang phuong
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cong manh » cong danh, duong manh, cong thanh
duong van » duong va, luong va, dang van
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: hoc ((chieu sang) or (chieu sach)) - hanh tinh quang nhung ((cong manh) or (duong van)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu sach)) - hanh tinh quang nhung ((cong manh) OR (duong van)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu sach)) - hanh tinh quang nhung ((cong manh) or (duong van)) toan cau*.