Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
tu sach » thu sach, su sach, te sach
va cham » va chat, va tham
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
ve cham » ve chat, vu cham, ve chim
ly hang » ly quang
ty nang » ky nang, ty xang, ty hang
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: tu sach ((ty nang) or (ly hang)) xa hoi. hieu ((ve cham) or (va cham)) truc va danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ly hang)) xa hoi. hieu ((ve cham) OR (va cham)) truc va danh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ly hang)) xa hoi. hieu ((ve cham) or (va cham)) truc va danh vai cua tre*.