Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
chua dong » ha dong, huy dong, hoa dong
cac thanh » bac thanh, cach nhanh, ban thanh
thanh bai » thanh hai, thanh tai, thanh oai
cua dong » cua cong, cua dang, cua nong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (hieu manh)) - canh tranh ((cua dong) OR (chua dong)) trong cac thanh bai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (hieu manh)) - canh tranh ((cua dong) OR (chua dong)) trong cac thanh bai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (hieu manh)) - canh tranh ((cua dong) OR (chua dong)) trong cac thanh bai".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (hieu manh)) - canh tranh ((cua dong) OR (chua dong)) trong cac thanh bai*.