Perhaps you should try some spelling variations:
thien van » thi van
mang mai » mang may, lang mai, mang lai
hieu van » hieu va, lieu va, hieu ve
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky mang » ky nang, ke mang, ky dang
mai hoi » mai khoi, dai hoi, lai hoi
cam tuc » cam xuc, cam tu, nam thuc
xa hanh » xa thanh, xa khanh, va hanh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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 mang mai hoi. ((hieu van) or (thien van)) cam tuc xa hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky mang mai hoi. ((hieu van) OR (thien van)) cam tuc xa hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky mang mai hoi. ((hieu van) or (thien van)) cam tuc xa hanh vai cua tre*.