Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
luat duong » luat huong, luat thuong, tuan duong
xuat duong » xuat thuong, xuat phuong, xuat truong
hieu sang » hieu lang, hieu quang, nhieu tang
huong van » huong dan, duong van, hong van
van toan » van tuan, van tan, van thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sang) OR (chieu sang)) - canh tranh ((luat duong) or (xuat duong)) huong van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sang) OR (chieu sang)) - canh tranh ((luat duong) OR (xuat duong)) huong van toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu sang) OR (chieu sang)) - canh tranh ((luat duong) or (xuat duong)) huong van toan tap".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sang) OR (chieu sang)) - canh tranh ((luat duong) or (xuat duong)) huong van toan tap*.