Perhaps you should try some spelling variations:
su sach » so sach, vu sach
ky tang » ky dang, kho tang, ky trong
lap lai » lap tai, lay lai, lam lai
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
ve cac » vien cac
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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 tang) or (ky nang)) lap lai. hieu ((ve cac) or (va cac)) xuc va danh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky tang) OR (ky nang)) lap lai. hieu ((ve cac) OR (va cac)) xuc va danh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky tang) or (ky nang)) lap lai. hieu ((ve cac) or (va cac)) xuc va danh vi cua tu*.