Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
chat truc » cau truc, chat xuc
thu sach » tu sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
van chat » cao chat
danh sai » dung sai, danh bat, danh dau
truc va » thuc va, thuc vat, trung va
va danh » va dinh, va dan, va hanh
sai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
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: ((thu sach) or (thuat sach)) ky nang x hoi. hieu van chat truc va danh sai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) ky nang x hoi. hieu van chat truc va danh sai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) ky nang x hoi. hieu van chat truc va danh sai cua tre*.