Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
tinh bai » tinh bac, tinh hai, hinh bai
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
sach ky » sach y, sach ty, sach kem
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va tinh » may tinh
bai cua » ban cua, dai cua, bai ca
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
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: thuat ((sach ky) OR (sac ky)) ((nang xa) or (lang xa)) hoi. hieu ve cham luc va tinh bai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ky) OR (sac ky)) ((nang xa) OR (lang xa)) hoi. hieu ve cham luc va tinh bai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach ky) OR (sac ky)) ((nang xa) or (lang xa)) hoi. hieu ve cham luc va tinh bai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ky) OR (sac ky)) ((nang xa) or (lang xa)) hoi. hieu ve cham luc va tinh bai cua tre*.