Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
danh dien » dinh dien, danh kien, danh lien
dien cuc » dien tu, dieu cua, vien cac
toc sach » hoc sach, doc sach, nuoc sach
tham soc » cham soc, tham nuoc, thai son
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
va tham » van tham, va cham, va thanh
nang xa » nang x, lang xa, nang ma
v nang » va nang, vu nang, van nang
soc va » hoc va, loc va, doc va
cuc te » cua te, cuc thue, cuc tieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (((toc sach) OR (thuoc sach)))) v nang xa hoi. hieu va tham soc va danh dien cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (((toc sach) OR (thuoc sach)))) v nang xa hoi. hieu va tham soc va danh dien cuc te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (((toc sach) OR (thuoc sach)))) v nang xa hoi. hieu va tham soc va danh dien cuc te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (((toc sach) OR (thuoc sach)))) v nang xa hoi. hieu va tham soc va danh dien cuc te*.