Perhaps you should try some spelling variations:
hanh dien » nhanh dien, hang dien, danh dien
toc sach » hoc sach, doc sach, thuoc sach
dien cuc » dien tu, dieu cua, vien cac
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
soc van » hoc van, sac van, soc dan
oc van » hoc van, luoc van, quoc van
cuc te » cua te, cuc thue, cuc tieu

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 vu nang xa hoi. hieu va cham ((soc van) OR (oc van)) hanh dien cuc te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach vu nang xa hoi. hieu va cham ((soc van) OR (oc van)) hanh dien cuc te".
• Adding a wildcard symbol may retrieve word variants: toc sach vu nang xa hoi. hieu va cham ((soc van) OR (oc van)) hanh dien cuc te*.