Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trong tinh » truong tinh, trong kinh, trong linh
trong sinh » trong kinh, trong san
hieu manh » hieu nganh, dieu hanh, hien hanh
tranh cua » doanh cua, manh cua
cua dang » cua cong, cua ban
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: hoc ((hieu manh) or (chieu xanh)) - canh tranh cua dang ((trong tinh) OR (trong sinh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - canh tranh cua dang ((trong tinh) OR (trong sinh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu xanh)) - canh tranh cua dang ((trong tinh) OR (trong sinh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - canh tranh cua dang ((trong tinh) OR (trong sinh)) toan tap*.