Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hang doi » hang di, hang loi, huong doi
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
van cau » van dau, van hau, van chat
cau tuc » cau truc, cau tu, cau luc
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang x hoi. hieu van cau tuc va ((hanh di) or (hang doi)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu van cau tuc va ((hanh di) OR (hang doi)) cua viet*.