Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van dinh » van minh, van dich, xuan dinh
su sach » so sach, vu sach
va dinh » va kinh, va tinh, vu dinh
cac xuc » cam xuc, cac nuoc, chat xuc
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
de cua » le cua, te cua, dieu cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach v nang xa hoi. ((hieu ve) or (hieu van)) cac xuc ((va dinh) OR (van dinh)) de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v nang xa hoi. ((hieu ve) OR (hieu van)) cac xuc ((va dinh) OR (van dinh)) de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v nang xa hoi. ((hieu ve) or (hieu van)) cac xuc ((va dinh) OR (van dinh)) de cua te".
• Adding a wildcard symbol may retrieve word variants: su sach v nang xa hoi. ((hieu ve) or (hieu van)) cac xuc ((va dinh) OR (van dinh)) de cua te*.