Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hanh trung » thanh trung, hanh trang, manh trung
chua dong » cua dong, ha dong, huy dong
duong anh » duong manh, duong xanh, duong vanh
qua dung » quang dung, su dung, qua song
tuan cau » toan cau, quan cau, tuan cu

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 xanh)) - hanh trung ((qua dung) or (chua dong)) duong anh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu xanh)) - hanh trung ((qua dung) OR (chua dong)) duong anh tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) OR (chieu xanh)) - hanh trung ((qua dung) or (chua dong)) duong anh tuan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) OR (chieu xanh)) - hanh trung ((qua dung) or (chua dong)) duong anh tuan cau*.