Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
nang cam » nang cham, nang cao, nang cap
thi nang » thi cong, ki nang, thi hanh
mai hoi » mai khoi, dai hoi, lai hoi
hanh du » hanh dua, hanh tu, hanh de
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
tu nang » tru nang, tu nong, tu nano
ma hoi » xa hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
du cuu » tu cuu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) tu nang ((ma hoi) OR (mai hoi)). thi nang cam xuc va hanh du cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) tu nang ((ma hoi) or (mai hoi)). thi nang cam xuc va hanh du cuu tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) tu nang ((ma hoi) or (mai hoi)). thi nang cam xuc va hanh du cuu tre*.