Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tinh hai » tinh thai, tinh chat, trinh han
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
van cam » van nam, van lam, van cau
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » tuc va, luc va, xac va

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 nang ma hoi. hieu van cam ((xuc va) or (duc va)) tinh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu van cam ((xuc va) OR (duc va)) tinh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu van cam ((xuc va) or (duc va)) tinh hai cua tre*.