Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
vai cua » dai cua, hai cua, lai cua
dao vai » dao van, dao va, dao bai
cua tre » cua te, cuu tre, cua triet
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
ve cac » va cac, vien cac
xuc ca » xuc cam, xuc cua
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((ky lang) or (ky dang)) xa hoi. hieu ((ve cam) OR (ve cac)) xuc ca dao vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((ky lang) OR (ky dang)) xa hoi. hieu ((ve cam) OR (ve cac)) xuc ca dao vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((ky lang) or (ky dang)) xa hoi. hieu ((ve cam) OR (ve cac)) xuc ca dao vai cua tre*".