Perhaps you should try some spelling variations:
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
cam loc » cam lo
va dinh » van dinh, va kinh, va tinh
dinh ve » dinh ket, dinh van
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao
loc va » hoc va, luc va
ve cuu » ve cau, ve chu, ve cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sach ty)) dang xa hoi. hieu va cam loc va dinh ve cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) dang xa hoi. hieu va cam loc va dinh ve cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach ty)) dang xa hoi. hieu va cam loc va dinh ve cuu tre*.