Perhaps you should try some spelling variations:
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu nano » truc nano
hieu va » lieu va, hieu qua
tuc xan » tuc dan, tuc xay, tuoc xanh
hanh di » hanh vi, hanh de, hang di
nano x » nano 1, nano o
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nano x hoi. hieu va cam ((tuc xan) OR (tuc xa)) hanh di cua te~.
• Adding a wildcard symbol may retrieve word variants: te sach tu nano x hoi. hieu va cam ((tuc xan) or (tuc xa)) hanh di cua te*.