Perhaps you should try some spelling variations:
chieu sang » chieu sach, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hieu lang » hieu quang, nhieu tang, hieu van
dang cong » dung cong
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap
va dang » van dang, va nang, va lang

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) OR (chieu xanh))) or (hieu lang)) - canh tranh va dang cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu sang) OR (chieu xanh))) OR (hieu lang)) - canh tranh va dang cong tan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((((chieu sang) OR (chieu xanh))) or (hieu lang)) - canh tranh va dang cong tan toan cau*".