Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
cau tren » cu tren, dau tren, ca tren
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
cam tuc » cam xuc, nam thuc, dam thuc
hieu ve » hieu va, hieu van
cam tu » cam thu, nam tu, dam tu
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ve ((cam tuc) or (cam tu)) va hanh dai ((cau tren) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tru nang x hoi. hieu ve ((cam tuc) OR (cam tu)) va hanh dai ((cau tren) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: te sach tru nang x hoi. hieu ve ((cam tuc) or (cam tu)) va hanh dai ((cau tren) or (cua tre))*.