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
han tai » hang tai, nhan tai, van tai
hieu va » lieu va
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
thu xa » thu xac, thu ha, thu xe
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 nang ma hoi. ((hieu va) or (hieu qua)) nam thu xa ((hanh tai) OR (han tai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. ((hieu va) OR (hieu qua)) nam thu xa ((hanh tai) OR (han 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 (hieu qua)) nam thu xa ((hanh tai) OR (han tai)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. ((hieu va) or (hieu qua)) nam thu xa ((hanh tai) OR (han tai)) cuu tre*.