Perhaps you should try some spelling variations:
thanh cac » hanh cac, thanh bac, tranh cac
lang van » dang van, tang van, hoang van
thanh ca » thanh cha, thanh ha, thanh va
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
vu sai » vu hai, vu dai, vu tai
luc va » duc va, tuc va, loc va
vu san » va san, vu ban
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 sai) OR (vu san)) ky lang van hoi. hieu ve cac luc va ((thanh ca) or (thanh cac)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sai) OR (vu san)) ky lang van hoi. hieu ve cac luc va ((thanh ca) OR (thanh cac)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sai) OR (vu san)) ky lang van hoi. hieu ve cac luc va ((thanh ca) or (thanh cac)) cua tre*".