Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
dung tay » dung may, vung tay, dung va
hieu van » hieu va, thien van, lieu va
te sach » toc sach
tinh va » tich va, trinh van, trinh vat
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
va cuu » va cau, va chu, va huu

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 thu ((dung tay) OR (dung tai)) thai. hieu van nam ((xuc va) or (tuc va)) tinh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu ((dung tay) OR (dung tai)) thai. hieu van nam ((xuc va) OR (tuc va)) tinh va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu ((dung tay) OR (dung tai)) thai. hieu van nam ((xuc va) or (tuc va)) tinh va cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach thu ((dung tay) OR (dung tai)) thai. hieu van nam ((xuc va) or (tuc va)) tinh va cuu tre*.