Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va doan » va doanh, van doan, va dan
chu tre » cho tre, chu tri, cuu tre
luc va » duc va, tuc va, loc va
va chu » va che, va cau, va chi

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 ((ty nang) or (ty hang)) xa hoi. hieu ve cham luc va doan va chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty hang)) xa hoi. hieu ve cham luc va doan va chu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ty hang)) xa hoi. hieu ve cham luc va doan va chu tre*.