Perhaps you should try some spelling variations:
truc van » thuc van, truc ban, truc dan
bo sach » co sach, hoc sach
truc va » thuc va, thuc vat, trung va
hanh di » hanh vi, hanh de, danh di
hang di » hang doi, hang vi, hang dien
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
va dau » va dao
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: bo sach y nang x hoi. lieu va dau ((truc van) or (truc va)) ((hanh di) OR (hang di)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y nang x hoi. lieu va dau ((truc van) OR (truc va)) ((hanh di) OR (hang di)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach y nang x hoi. lieu va dau ((truc van) or (truc va)) ((hanh di) OR (hang di)) cuu tre*".