Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
su sach » so sach, vu sach
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van lam » van nam
cua tre » cuu tre, cua triet, dua tren
sach ty » sach y, sach tu, sach thu
cua te » cua tu
tuc va » thuc va, truc va, tuc xa
luc va » duc va, loc va

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