Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat huu » pham huu
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va danh » va dan, dia danh, va thanh
va dinh » van dinh, va kinh, va tinh
va hanh » van hanh, va thanh, ban hanh
cua tre » cua te, cuu tre, cua triet

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 ky nang xa hoi. hieu van chat huu ((((va danh) OR (va dinh))) or (va hanh)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang xa hoi. hieu van chat huu ((((va danh) OR (va dinh))) OR (va hanh)) dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang xa hoi. hieu van chat huu ((((va danh) OR (va dinh))) or (va hanh)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang xa hoi. hieu van chat huu ((((va danh) OR (va dinh))) or (va hanh)) dai cua tre*.