Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, lanh tranh
hanh trang » thanh trung, canh tranh, hanh trinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cua dung » cua dang, cua dong, qua dung
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - ((hanh tranh) OR (hanh trang)) cua dung cong ((dan than) or (tan tran)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((hanh tranh) OR (hanh trang)) cua dung cong ((dan than) OR (tan tran)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((hanh tranh) OR (hanh trang)) cua dung cong ((dan than) or (tan tran)) tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((hanh tranh) OR (hanh trang)) cua dung cong ((dan than) or (tan tran)) tap*.