Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van sinh » van minh, va sinh, van dinh
sinh dai » sinh thai, si dai, sinh vat
cua tren » dua tren, ca tren, cua tre
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van dau » van dao, phan dau
dau vuc » dau nuoc
vuc van » duc van, luc van, thuc van
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu van dau vuc van sinh dai cua tren~.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu van dau vuc van sinh dai cua tren*.