Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
van thanh » ban thanh, van tuan
than cua » nhan cua, thai cua, ban cua
hieu ve » hieu va, hieu van
luc van » luoc van, luu van, duc van
cac luc » cau luc, coc luc, cac nuoc
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
ve cac » va cac, vien cac
tu san » thu san, tu can, vu san
tu ban » thu ban, te ban
tu bat » tu dat
o lai » o lao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((tu bat) OR (tu ban))) or (tu san)) ky nang o lai. hieu ve cac luc van thanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu bat) OR (tu ban))) OR (tu san)) ky nang o lai. hieu ve cac luc van thanh than cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu bat) OR (tu ban))) or (tu san)) ky nang o lai. hieu ve cac luc van thanh than cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((tu bat) OR (tu ban))) or (tu san)) ky nang o lai. hieu ve cac luc van thanh than cua tre*.