Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
tham luc » than luc, tham nuoc, tham thuc
van hanh » van thanh, ban hanh, van anh
ky dang » ky danh
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
luc van » luoc van, luu van, duc van
cua tre » cua te, cuu tre, cua triet
te cao » te bao
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: te cao ((((tay lang) or (ky dang))) or (ky nang)) xa hoi. hieu va tham luc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cao ((((tay lang) OR (ky dang))) OR (ky nang)) xa hoi. hieu va tham luc van hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te cao ((((tay lang) or (ky dang))) or (ky nang)) xa hoi. hieu va tham luc van hanh vi cua tre*.