Perhaps you should try some spelling variations:
hanh than » hanh han, hanh phan, nhanh thanh
hanh nhan » thanh nhan, danh nhan, anh nhan
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu 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
van bac » van ban, van bao, van hac
cua tre » cua te, cuu tre, cua triet

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu van bac duc va ((hanh than) OR (hanh nhan)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu van bac duc va ((hanh than) OR (hanh nhan)) cua tre*.