Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, thi nang
cac thuc » cach thuc, cac thu, can thuc
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
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: te sach ((tru nang) OR (truc nano)) xa hoi. hieu va cac thuc va hanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tru nang) OR (truc nano)) xa hoi. hieu va cac thuc va hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((tru nang) OR (truc nano)) xa hoi. hieu va cac thuc va hanh dai cua tre*.