Perhaps you should try some spelling variations:
dinh dai » dinh dat, sinh dai, dinh dao
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
xuc va » tuc va, luc va, xac va
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 nang xa hoi. hieu va cac ((xuc va) or (duc va)) dinh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu va cac ((xuc va) OR (duc va)) dinh dai cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. hieu va cac ((xuc va) or (duc va)) dinh dai cua te*.