Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
lang van » dang van, tang van, hoang van
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
di cuu » di cau, di cua, dinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ty ((nang xa) or (lang van)) hoi. hieu va cac ((tuc va) or (duc va)) hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty ((nang xa) OR (lang van)) hoi. hieu va cac ((tuc va) OR (duc va)) hanh di cuu tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty ((nang xa) or (lang van)) hoi. hieu va cac ((tuc va) or (duc va)) hanh di cuu tre*.