Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
tai cuu » tai cuc, tai buu, tai cua
thuc xa » thuc xay, thuc va, thuc ha
qua nam » quan nam, cua nam, quang nam
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
cuu tre » cua tre, cau tren, cau treo
ma hoi » xa hoi, ma hoa, me hoi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((ma hoi) OR (mai hoi)). hieu qua nam ((thuc xa) OR (tuc xa)) hanh tai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((ma hoi) or (mai hoi)). hieu qua nam ((thuc xa) OR (tuc xa)) hanh tai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((ma hoi) or (mai hoi)). hieu qua nam ((thuc xa) OR (tuc xa)) hanh tai cuu tre*.