Perhaps you should try some spelling variations:
thanh ca » thanh cha, thanh cac, thanh ha
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
loc va » hoc va
ca cua » co cua
vu sac » vu sach, vu san, va sac
luc va » duc va, tuc va
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ((ky lang) OR (ky tang)) van hoi. hieu ve cac ((luc va) or (loc va)) thanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ((ky lang) OR (ky tang)) van hoi. hieu ve cac ((luc va) OR (loc va)) thanh ca cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ((ky lang) OR (ky tang)) van hoi. hieu ve cac ((luc va) or (loc va)) thanh ca cua tre*".