Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhanh dong
trong thpt » truong thpt, trong thuat, trong thiet
tieu sach » chieu sach, dien sach, te sach
nhan dang » nhan dan, phan dang, tran dang
van dung » van dong, xay dung, tin dung
thpt dan » thuc dan, tho dan
dan chat » van chat, dan chan, ban chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - ((nhanh lang) or (nhan dang)) van dung trong thpt dan chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((nhanh lang) OR (nhan dang)) van dung trong thpt dan chat.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((nhanh lang) or (nhan dang)) van dung trong thpt dan chat*.