Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
van chao » van chat, van hao, van cho
van dinh » van minh, van dich, xuan dinh
nang xa » nang x, lang xa, nang ma
va dinh » va kinh, va tinh, vu dinh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va cua » va chua, via cua, ca cua
tinh » trinh, minh, kinh

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 y nang xa hoi. thien van chao xu ((may tinh) or (((van dinh) OR (va dinh)))) va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. thien van chao xu ((may tinh) OR (((van dinh) OR (va dinh)))) va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. thien van chao xu ((may tinh) or (((van dinh) OR (va dinh)))) va cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. thien van chao xu ((may tinh) or (((van dinh) OR (va dinh)))) va cua tre*.