Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va
loc van » luoc van, hoc van, lo van
cam loc » cam lo
vi cua » vai cua, di cua
sac ky » sai ky

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

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