Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
chiet tach » chieu sach
chong cong » cong cong, thong cong, cuong cong
hieu lang » hieu quang, nhieu tang, hieu van
tranh cua » doanh cua, manh cua
cua chong » cua cong, cua chung, cua khong
cong tan » cong tac, cong san, cong thanh
tan han » tan nhan, tran han, tan van
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((((hieu lang) OR (chieu sang))) or (chiet tach)) - canh tranh cua chong cong tan han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((hieu lang) OR (chieu sang))) OR (chiet tach)) - canh tranh cua chong cong tan han tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((((hieu lang) OR (chieu sang))) or (chiet tach)) - canh tranh cua chong cong tan han tap".
• Adding a wildcard symbol may retrieve word variants: theo ((((hieu lang) OR (chieu sang))) or (chiet tach)) - canh tranh cua chong cong tan han tap*.