Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
danh doi » danh di, thanh doi, dung doi
tham soc » cham soc, tham nuoc, thai son
doi cua » dai cua, hoi cua
va danh » va dinh, va dan, va hanh
va tham » van tham, va cham, va thanh
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, kho tang
soc va » hoc va, loc va, doc va
y tang » 6 tang, 7 tang, 5 tang
ma hoi » mai hoi, xa hoi, ma hoa

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)) ((y tang) or (ky tang)) ma hoi. lieu va tham soc va danh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ((y tang) OR (ky tang)) ma hoi. lieu va tham soc va danh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ((y tang) or (ky tang)) ma hoi. lieu va tham soc va danh doi cua tre*.