Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
ly vang » ly hang, ly van, ly quang
ly nang » ky nang, ly hang, ly quang
ve cac » vien cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ly nang) or (ly vang)) xa hoi. hieu ((ve cac) or (va cac)) thuc va danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly nang) OR (ly vang)) xa hoi. hieu ((ve cac) OR (va cac)) thuc va danh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ly nang) or (ly vang)) xa hoi. hieu ((ve cac) or (va cac)) thuc va danh vai cua tre*.