Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trong dan » trong dang, trong san, trong tan
gian thua » giai thuat, gian cua, gian ha
mang cua » manh cua, dung cua, ban cua
cua dung » cua dang, cua dong, qua dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (hieu manh)) - cach mang cua dung trong dan gian thua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (hieu manh)) - cach mang cua dung trong dan gian thua.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (hieu manh)) - cach mang cua dung trong dan gian thua*.