Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
tham soc » cham soc, tham nuoc, thai son
ky lang » ky dang, ky tang
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, ve cac, te cao
soc va » hoc va, loc va, doc va
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 cac ((((ky lang) OR (tay lang))) or (ky nang)) xa hoi. hieu va tham soc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ((((ky lang) OR (tay lang))) OR (ky nang)) xa hoi. hieu va tham soc va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ((((ky lang) OR (tay lang))) or (ky nang)) xa hoi. hieu va tham soc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te cac ((((ky lang) OR (tay lang))) or (ky nang)) xa hoi. hieu va tham soc va hanh vi cua tre*.