Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dua tren » dung tren
hanh di » hanh vi, hang di, danh di
hanh de » hanh ve, hanh kem
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
co xuc » co xuoc, co xua
xuc va » duc va, tuc va, luc va
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
cua te » cua tu
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach v nang xa hoi. hieu va co xuc va ((hanh di) or (hanh de)) ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang xa hoi. hieu va co xuc va ((hanh di) OR (hanh de)) ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: toc sach v nang xa hoi. hieu va co xuc va ((hanh di) or (hanh de)) ((dua tren) or (cua te))*.