Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
ky sang » ky dang, ky tang, duy sang
thuc xa » thuc xay, tuc xa, thuc va
xa hanh » xa thanh, xa khanh, va hanh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 ((ky sang) OR (ky nang)) ma hoi. hieu van nam thuc xa hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky sang) OR (ky nang)) ma hoi. hieu van nam thuc xa hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) OR (ky nang)) ma hoi. hieu van nam thuc xa hanh vai cua tre*.