Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham xuc » cam xuc, chat xuc, cham soc
ty nang » ty xang, ty hang, ly nang
hieu va » hieu qua
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ty nang) or (ky nang)) xa hoi. ((hieu va) or (lieu va)) cham xuc va danh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ty nang) OR (ky nang)) xa hoi. ((hieu va) OR (lieu va)) cham xuc va danh di cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty nang) or (ky nang)) xa hoi. ((hieu va) or (lieu va)) cham xuc va danh di cua tre*.