Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
de cac » den cac, de cai, do cac
ve cac » va cac, vien cac
soc va » loc va, doc va, goc 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: ((de cac) or (ve cac)) ky lang xa hoi. hieu va thanh ((soc va) or (hoc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((de cac) OR (ve cac)) ky lang xa hoi. hieu va thanh ((soc va) OR (hoc va)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((de cac) or (ve cac)) ky lang xa hoi. hieu va thanh ((soc va) or (hoc va)) hanh vi cua tre*.