Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
su sach » so sach, vu sach
ky dang » ky nang, ky danh
mai hoi » mai khoi, dai hoi, lai hoi
lap cua » lai cua, tap cua, lam cua
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
luc va » duc va, tuc va, loc va
ve cac » va cac, vien cac
xuc va » duc va, tuc va, xac va
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang ((mai hoi) OR (xa hoi)). hieu ve cac ((xuc va) OR (luc va)) thanh lap cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky dang ((mai hoi) or (xa hoi)). hieu ve cac ((xuc va) OR (luc va)) thanh lap cua te~".
• Adding a wildcard symbol may retrieve word variants: su sach ky dang ((mai hoi) or (xa hoi)). hieu ve cac ((xuc va) OR (luc va)) thanh lap cua te*.