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, cay thuc
can thuc » dan thuc, van thuc, cay thuc
day hanh » day nhanh, day thanh, dao hanh
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
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 xa hoi. hieu va ((cac thuc) OR (can thuc)) day hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tru nang xa hoi. hieu va ((cac thuc) OR (can thuc)) day hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach tru nang xa hoi. hieu va ((cac thuc) OR (can thuc)) day hanh vai cua tre*.