Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
nhan tai » hang tai, van tai, toan tai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va nhan » van nhan, ca nhan, va phan
cuc tre » cuu tre, cuc thue, cuoc tro
cua tre » cua te, cuu tre, cua triet
duc tre » duoc tren, duc tien
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky dang xa hoi. hieu ve cham luc va nhan tai ((((cuc tre) or (cua tre))) or (duc tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. hieu ve cham luc va nhan tai ((((cuc tre) OR (cua tre))) OR (duc tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xa hoi. hieu ve cham luc va nhan tai ((((cuc tre) or (cua tre))) or (duc tre))*.