Perhaps you should try some spelling variations:
phap duc » pham duc, phan duc, phap doc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
va phap » va phat, ban phap
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua
x hoi » o hoi, x ho, 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: tu sach ty nang ((x hoi) or (xa hoi)). lieu va phap duc ((va danh) or (va dinh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((x hoi) OR (xa hoi)). lieu va phap duc ((va danh) OR (va dinh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((x hoi) or (xa hoi)). lieu va phap duc ((va danh) or (va dinh)) vi cua tre*.