Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, mang xa, ang xa
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((((nang xa) OR (nang x))) OR (nang ma)) hoi. hieu va cam xuc va hanh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((((nang xa) OR (nang x))) OR (nang ma)) hoi. hieu va cam xuc va hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((((nang xa) OR (nang x))) OR (nang ma)) hoi. hieu va cam xuc va hanh vi cuu tre*.