Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tru nang » tra nang, tri nang, truc nano
hanh vai » hanh vi, hanh va, hanh tai
tu nang » tu nong, tu nano, tu lang
hieu va » lieu va, hieu qua
co thuc » do thuc, co thua, mo thuc
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
va co » vo co

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 ((tu nang) OR (tru nang)) xa hoi. hieu va co thuc va hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((tu nang) OR (tru nang)) xa hoi. hieu va co thuc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ((tu nang) OR (tru nang)) xa hoi. hieu va co thuc va hanh vai cua tre*.