Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, qua cua
dien cuc » dien tu, dieu cua, vien cac
te sach » toc sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
da dien » dat dien, dai dien, dau dien
soc va » hoc va, loc va, doc va
cuc te » cua te, cuc thue, cuc tieu
va da » va dao, va dau, va dap

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 vu nang xa hoi. hieu ((qua cham) or (va cham)) soc va da dien cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach vu nang xa hoi. hieu ((qua cham) OR (va cham)) soc va da dien cuc te.
• Adding a wildcard symbol may retrieve word variants: te sach vu nang xa hoi. hieu ((qua cham) or (va cham)) soc va da dien cuc te*.