Perhaps you should try some spelling variations:
dinh dat » dinh ket, dinh van, dinh lam
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu va » hieu qua
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
dat cua » dai cua, day cua, mat 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: so sach ty xang xa hoi. ((hieu va) OR (lieu va)) cau ((xuc van) or (luc van)) dinh dat cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty xang xa hoi. ((hieu va) OR (lieu va)) cau ((xuc van) OR (luc van)) dinh dat cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty xang xa hoi. ((hieu va) OR (lieu va)) cau ((xuc van) or (luc van)) dinh dat cua te*".