Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh ve, nhanh vi
thanh va » thanh van, hanh va, thanh ha
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
xuc gia » luc gia, tuc gia, quoc gia
duc gia » quoc gia
cua tre » cua te, cuu tre, cua triet
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky tang xa hoi. hieu van nam ((xuc gia) or (duc gia)) ((thanh vi) OR (thanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky tang xa hoi. hieu van nam ((xuc gia) OR (duc gia)) ((thanh vi) OR (thanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky tang xa hoi. hieu van nam ((xuc gia) or (duc gia)) ((thanh vi) OR (thanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu san ky tang xa hoi. hieu van nam ((xuc gia) or (duc gia)) ((thanh vi) OR (thanh va)) cua tre*.