Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
kly nang » ky nang, ki nang, kha nang
hanh doi » thanh doi, hanh noi, hang doi
va tham » van tham, va cham, va thanh
ly nang » ky nang, ly hang, ly vang
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
doc va » duoc va, hoc va, duc va
loc va » hoc va, luc va
x hoi » xa hoi, o hoi, x ho

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) or (kly nang)) x hoi. lieu va tham ((doc va) or (loc va)) hanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ly nang) OR (kly nang)) x hoi. lieu va tham ((doc va) OR (loc va)) hanh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((ly nang) or (kly nang)) x hoi. lieu va tham ((doc va) or (loc va)) hanh doi cua tre*.