Perhaps you should try some spelling variations:
te sach » toc sach
sach ty » sach y, sach tu, sach thu
xang xa » mang xa, ang xa, dang xay
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di 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 ty ((xang xa) OR (lang xa)) hoi. hieu va cam tuc va danh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((xang xa) OR (lang xa)) hoi. hieu va cam tuc va danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((xang xa) OR (lang xa)) hoi. hieu va cam tuc va danh vi cua tre*.