Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, hinh tai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cuc tre » duc tre, cuu tre, cuc thue
han tai » hang tai, nhan tai, van tai
nam tuc » nam thuc, nam truc, nam tu
hieu va » lieu va, hieu qua
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, cua triet
va nam » van nam, ha nam, va nay
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: te sach ky sang ma hoi. hieu va nam tuc xa ((hanh tai) or (han tai)) ((cuc tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang ma hoi. hieu va nam tuc xa ((hanh tai) OR (han tai)) ((cuc tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang ma hoi. hieu va nam tuc xa ((hanh tai) or (han tai)) ((cuc tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky sang ma hoi. hieu va nam tuc xa ((hanh tai) or (han tai)) ((cuc tre) OR (cua tre))*.