Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
danh vi » hanh vi, dinh vi, danh di
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua su
luc va » duc va, tuc va, loc va
xuc va » duc va, tuc va, xac va
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky lang ha hoi. hieu va cac ((xuc va) OR (luc va)) danh vi ((cua tu) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky lang ha hoi. hieu va cac ((xuc va) OR (luc va)) danh vi ((cua tu) OR (cua cu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky lang ha hoi. hieu va cac ((xuc va) OR (luc va)) danh vi ((cua tu) or (cua cu))*".