Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
cac thuc » cach thuc, cac thu, can thuc
hanh vai » hanh vi, hanh tai, hanh van
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
hanh va » hang va, hanh vi
cuu tre » cua tre, cau tren, cau treo

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