Perhaps you should try some spelling variations:
van nhan » van phan, van thanh, danh nhan
hieu van » hieu va, thien van, lieu va
kinh di » kinh do, kinh i, minh di
te sach » toc sach
ty nang » ty xang, ty hang, ly nang
cua tre » cua te, cuu tre, cua triet
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, de cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ky nang)) xa hoi. hieu van nhan ((luc va) OR (tuc va)) kinh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) or (ky nang)) xa hoi. hieu van nhan ((luc va) OR (tuc va)) kinh di cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ky nang)) xa hoi. hieu van nhan ((luc va) OR (tuc va)) kinh di cua tre*.