Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nguong dan » huong dan
tranh cua » doanh cua, manh cua
nguoi dan » nguoi dao, nguoi san, nguoi tay
cua tang » cua dang, cua hang, ca tang
tuan tap » toan tap, tuan tai, tuyen tap

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 xanh) or (chieu sach)) - canh tranh cua tang ((nguoi dan) OR (nguong dan)) tuan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - canh tranh cua tang ((nguoi dan) OR (nguong dan)) tuan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sach)) - canh tranh cua tang ((nguoi dan) OR (nguong dan)) tuan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - canh tranh cua tang ((nguoi dan) OR (nguong dan)) tuan tap*.