Perhaps you should try some spelling variations:
cham hoc » cham soc, chat hoc, cham hoi
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
sai ky » sac 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 (cac ky)) lang xa hoi. hieu ve cham hoc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sai ky) OR (cac ky)) lang xa hoi. hieu ve cham hoc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sai ky) or (cac ky)) lang xa hoi. hieu ve cham hoc va hanh vi cua tre*.