Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
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 xa)) hoi. hieu vien 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 xa)) hoi. hieu vien 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 xa)) hoi. hieu vien cac ((tuc va) or (duc va)) hanh di cuu tre*.