Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
van toan » van tuan, van tan, van thanh

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) or (chiet tach)) - hanh trinh quan dung cong ((van toan) or (tan tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chiet tach)) - hanh trinh quan dung cong ((van toan) OR (tan tran)) cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (chiet tach)) - hanh trinh quan dung cong ((van toan) or (tan tran)) cau*.