Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hinh » van chinh, van thinh, van hanh
thai cuu » thai cua, tai cuc, thi cuc
sach ty » sach y, sach tu, sach thu
ty sang » ty xang, ty hang, duy sang
hieu ve » hieu va, hieu van
ve chao » ve chat, ve cham, ve cho
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty sang ((ma hoa) or (xa hoi)). hieu ve chao xu ((van hinh) OR (van minh)) thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty sang ((ma hoa) OR (xa hoi)). hieu ve chao xu ((van hinh) OR (van minh)) thai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty sang ((ma hoa) or (xa hoi)). hieu ve chao xu ((van hinh) OR (van minh)) thai cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ty sang ((ma hoa) or (xa hoi)). hieu ve chao xu ((van hinh) OR (van minh)) thai cuu tre*.