Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
tai cua » thai cua, tai cuc, tri cua
van lam » van nam
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
xac va » tac va, ac va, bac va
tuc va » thuc va, truc va, tuc xa
ky anh » ky danh, ly anh, ty anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky dang) or (ky anh)) ma hoi. hieu van lam ((xac va) or (tuc va)) hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky dang) OR (ky anh)) ma hoi. hieu van lam ((xac va) OR (tuc va)) hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((ky dang) or (ky anh)) ma hoi. hieu van lam ((xac va) or (tuc va)) hanh tai cua tre*.