Perhaps you should try some spelling variations:
hang tai » hang va, dung tai
hanh tai » thanh tai, han tai, hinh tai
te sach » toc sach
nam tuc » nam thuc, nam truc, nam tu
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
hieu va » hieu qua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa

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. ((hieu va) OR (lieu va)) nam tuc xa ((hanh tai) OR (hang tai)) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. ((hieu va) OR (lieu va)) nam tuc xa ((hanh tai) or (hang tai)) cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. ((hieu va) OR (lieu va)) nam tuc xa ((hanh tai) or (hang tai)) cuu tre*.