Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hoc thuc » hoc huu
thuc ban » thuoc ban, thuc dan, thu ban
ban hanh » ban hang
hanh tai » thanh tai, hang tai, han tai
su sach » so sach, vu sach
ty nang » ty xang, ty hang, ty nong
ly nang » ly hang, ly vang, ly quang
van hoc » van hoa
cuc tre » duc tre, cua tre, cuu tre

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 (ly nang))) OR (ky nang)) xa hoi. hieu van hoc thuc ban hanh tai cuc tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((((ty nang) OR (ly nang))) or (ky nang)) xa hoi. hieu van hoc thuc ban hanh tai cuc tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ((((ty nang) OR (ly nang))) or (ky nang)) xa hoi. hieu van hoc thuc ban hanh tai cuc tre*.