Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » lieu tinh, chau tinh, kieu tinh
nhanh lang » nhanh quang, nhanh thang, nhan dang
thong tac » thong cac, tuong tac, thong tai
tac khang » tan khang, tao khang, bach khang
khang cau » hang cau, khang cu, khang chan
va thong » va thuong, va phuong, he thong
lang va » lang van, hang va, lang ha

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 (((chieu tinh) OR (trieu tinh)))) - nhanh lang va thong thong tac khang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (((chieu tinh) OR (trieu tinh)))) - nhanh lang va thong thong tac khang cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (((chieu tinh) OR (trieu tinh)))) - nhanh lang va thong thong tac khang cau*".