Perhaps you should try some spelling variations:
so sang » so sanh, so dang, so lang
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
vi cua » vai cua, di cua
du va » dau va, tu va, su va

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

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