Perhaps you should try some spelling variations:
thanh vinh » thanh tinh, than kinh, thanh van
thanh binh » thai binh, than kinh, tinh binh
hieu van » hieu va, thien van, lieu va
van cac » van hac, van cau, van bac
cua tre » cua te, cuu tre, cua triet
du van » duy van, duc van, tu van
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang x hoi. hieu van cac du van ((thanh vinh) or (thanh binh)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang x hoi. hieu van cac du van ((thanh vinh) OR (thanh binh)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang x hoi. hieu van cac du van ((thanh vinh) or (thanh binh)) cua tre*.