Perhaps you should try some spelling variations:
sach ky » sac ky, sach y, sach ty
dinh va » dinh van, dinh ve, tinh va
va dinh » van dinh, va kinh, va tinh
nam xua » nam cua, nam mua, nam qua
hieu va » lieu va, hieu qua
te sach » toc sach
lang xa » dang xay, lang van
lang ha » long ha
cua tre » cua te, cuu tre, cua triet
va nam » van nam, ha nam, va nay
xua va » xuat va, vua va, sua va
va cua » va chua, via cua, ca cua

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 ((lang xa) or (lang ha)) hoi. hieu va nam xua va dinh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((lang xa) OR (lang ha)) hoi. hieu va nam xua va dinh va cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((lang xa) or (lang ha)) hoi. hieu va nam xua va dinh va cua tre*.