Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
dung cong » dung trong
dung cua » dung luan, dung cho
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (chieu tinh)) - hanh ((ban cua) or (dung cua)) dung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu tinh)) - hanh ((ban cua) OR (dung cua)) dung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chieu tinh)) - hanh ((ban cua) or (dung cua)) dung cong dan toan cau*.