Perhaps you should try some spelling variations:
su sach » so sach, vu sach
ky sang » ky nang, ky tang, duy sang
ky dang » ky nang, ky danh
lap lai » lap tai, lay lai, lam lai
hieu ve » hieu va, hieu van
danh vi » hanh vi, dinh vi, danh di
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
ve cac » va cac, vien cac
xuc va » duc va, luc va, xac 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 sang) or (ky dang)) lap lai. hieu ve cac ((xuc va) OR (tuc va)) danh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky sang) OR (ky dang)) lap lai. hieu ve cac ((xuc va) OR (tuc va)) danh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky sang) or (ky dang)) lap lai. hieu ve cac ((xuc va) OR (tuc va)) danh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky sang) or (ky dang)) lap lai. hieu ve cac ((xuc va) OR (tuc va)) danh vi cua tu*.