Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
trung hat » trung nhat, trung phat, trung ha
doc hieu » hoc thieu, hoc hien
ba trung » tai trung, nam trung, do trung
van than » van thanh, van thang, van tuan
than cap » khan cap, thanh lap, thanh cac
lang ba » lang ban, lang ha, lang xa
hat van » hoat van, ha van, hai van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) sach - nhanh lang ba trung hat van than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) sach - nhanh lang ba trung hat van than cap.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) sach - nhanh lang ba trung hat van than cap*.