Perhaps you should try some spelling variations:
ban hanh » ban hang
cham luc » cham soc, nhan luc, cham cuu
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cai ky » cao ky, cac ky, cam ky
di cua » dai cua, doi cua, de cua
tu cai » tu cac, tu can, tu bai

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

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