Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
ban hanh » ban hang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((x hoi) OR (x ho)). hieu ve cham luc ((ban hanh) or (va danh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((x hoi) OR (x ho)). hieu ve cham luc ((ban hanh) OR (va danh)) di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ((x hoi) OR (x ho)). hieu ve cham luc ((ban hanh) or (va danh)) di cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((x hoi) OR (x ho)). hieu ve cham luc ((ban hanh) or (va danh)) di cua tre*.