Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
qua cao » qua cac, qua cai, qua co
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
qua ca » qua cac, qua cua, qua cai
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 (lang xa)) hoi. hieu ((qua cao) OR (qua ca)) xuc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (lang xa)) hoi. hieu ((qua cao) OR (qua ca)) 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 (lang xa)) hoi. hieu ((qua cao) OR (qua ca)) xuc va hanh vi cuu tre*".