Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, than kinh
hieu van » hieu va, thien van, lieu va
tinh cua » trinh cua, sinh cua, tinh chat
tu sach » thu sach, su sach, te sach
van lam » van nam
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
tuc va » thuc va, tuc xa, duc va
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 lam ((tuc va) or (truc va)) thanh tinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu van lam ((tuc va) OR (truc va)) thanh tinh cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu van lam ((tuc va) or (truc va)) thanh tinh cua tre*.