Perhaps you should try some spelling variations:
danh nhan » doanh nhan, thanh nhan, benh nhan
hanh vai » hanh vi, hanh va, hanh tai
van nhan » van phan, van thanh, van khanh
vai cua » dai cua, hai cua, lai cua
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
luc va » duc va, tuc va
loc va » hoc va
v nang » va nang, vu nang, van 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 v nang xa hoi. hieu ((van nhan) or (danh nhan)) ((luc va) OR (loc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang xa hoi. hieu ((van nhan) OR (danh nhan)) ((luc va) OR (loc va)) hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang xa hoi. hieu ((van nhan) or (danh nhan)) ((luc va) OR (loc va)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. hieu ((van nhan) or (danh nhan)) ((luc va) OR (loc va)) hanh vai cua tre*.