Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
cua tre » cua te, cuu tre, cua triet
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
lang xa » lang ha, dang xay, lang van
sac ky » cac ky
vi cua » vai cua, di cua

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

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