Perhaps you should try some spelling variations:
thanh cha » thanh nha, thanh phan, thanh pham
thanh ha » thanh hoa, thanh hai, nhanh ha
cua tre » cua te, cuu tre, cua triet
cac tuc » cac toc, cac tu, cac tac
van hoi » van hoc, van hoe, van loi
hieu ve » hieu va, hieu van
ky lang » ky nang, ky dang, ky tang
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa
vu sac » vu sach, vu san, va sac

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 ((van hoi) OR (van hoa)). hieu ve cac tuc va ((thanh cha) or (thanh ha)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky lang ((van hoi) OR (van hoa)). hieu ve cac tuc va ((thanh cha) OR (thanh ha)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky lang ((van hoi) OR (van hoa)). hieu ve cac tuc va ((thanh cha) or (thanh ha)) cua tre*".