Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
ndung tinh » nhung tinh, dang tinh, dung tin
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
dung tinh » dang tinh, dung ninh, dung tin
tang cua » mang cua, hang cua, tang luan
toan ban » van 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 ((chieu sang) or (chiet tach)) - hanh tang cua nhung ((dung tinh) or (ndung tinh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chiet tach)) - hanh tang cua nhung ((dung tinh) OR (ndung tinh)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chiet tach)) - hanh tang cua nhung ((dung tinh) or (ndung tinh)) toan ban*.