Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
cong ban » cong bang, cong san, cong tan
ban chat » van chat, bao chat, luan chat
chat ban » nhat ban, chat ran, cua ban
mang va » mang vua, hang va, bang va
va dung » van dung, va duong, vat dung

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 sach) or (((chieu sang) or (hieu lang)))) - hanh mang va dung cong ban chat ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (((chieu sang) OR (hieu lang)))) - hanh mang va dung cong ban chat ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (((chieu sang) or (hieu lang)))) - hanh mang va dung cong ban chat ban*.