Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
vu nang » vuc nang, va nang, vu dang
va hanh » van hanh, va thanh, va danh
bac tuc » bac tu, bach tuoc, bac thua
van bac » van ban, van bao, van hac
so sanh » do sanh
cuu tre » cua tre, cau tren, cau treo
v nang » va nang, van nang, voi nang
tuc va » thuc va, truc va, tuc xa
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sanh)) ((v nang) or (vu nang)) xa hoi. hieu van bac tuc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) ((v nang) OR (vu nang)) xa hoi. hieu van bac tuc va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) ((v nang) or (vu nang)) xa hoi. hieu van bac tuc va hanh vi cuu tre*.