Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hac truc » hoc truc, hang truc, sach truc
su sach » so sach, vu sach
ty nang » ty xang, ty hang, ly nang
van hac » van hoc, van ha, van hai
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cuu tre » cua tre, cau tren, cau treo
cua te » cua tu

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