Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
sach ky » sac ky, sach y, sach ty
dat cua » dai cua, day cua, mat cua
dau dat » dan dat, dau da, dau mat
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
te sach » toc sach
ky sang » ky nang, ky dang, ky tang
ma hoi » mai hoi, me hoi, va hoi
luc va » duc va, tuc va, loc va
va dau » va dao
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky sang ((((ma hoi) or (xa hoi))) or (ma hoa)). hieu ve cham luc va dau dat cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang ((((ma hoi) OR (xa hoi))) OR (ma hoa)). hieu ve cham luc va dau dat cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ky sang ((((ma hoi) or (xa hoi))) or (ma hoa)). hieu ve cham luc va dau dat cua te*.