Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van dinh » van minh, van dich, va dinh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van chi » van chien, luan chi, van chat
va tinh » may tinh
y nang » ky nang, ly nang, v nang
chi xu » choi xu, chi su, chi tu
va cuu » va cau, va huu
va chu » va che, va cau, va chi

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 chi xu ((va tinh) or (van dinh)) ((va cuu) or (va chu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu van chi xu ((va tinh) OR (van dinh)) ((va cuu) OR (va chu)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu van chi xu ((va tinh) or (van dinh)) ((va cuu) or (va chu)) tre*.