Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhanh lang » nhanh quang, nhanh thang, nhan dang
cong trong » cong thuong, duong trong, cong trinh
trong thpt » truong thpt, trong thuat, trong thiet
phan dang » phan dau, phan cong, nhan dan
ho chieu » theo chieu, hoc thieu, mot chieu
van cong » van dong, van phong, phan cong
thpt van » thpt dan, thpt tran, hat van
van chat » cao chat

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

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