Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh ban » thanh san, thanh van, thanh bac
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
sach ly » sach y, sach lo, sach ty
ban cua » ban quan
cam tuc » cam xuc, cam tu, dam thuc
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ly nang ((x hoi) OR (x ho)). hieu ve ((cam tuc) or (nam thuc)) va thanh ban cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ly nang ((x hoi) OR (x ho)). hieu ve ((cam tuc) OR (nam thuc)) va thanh ban cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ly nang ((x hoi) OR (x ho)). hieu ve ((cam tuc) or (nam thuc)) va thanh ban cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach ly nang ((x hoi) OR (x ho)). hieu ve ((cam tuc) or (nam thuc)) va thanh ban cua tre*.