Perhaps you should try some spelling variations:
thanh hoi » thanh hoai, thanh hoa, thanh hai
van thanh » ban thanh, van tuan
cua tre » cua te, cuu tre, cua triet
van lam » van nam
hoi cua » hoi chuc
xuc van » duc van, luc van, vuc van
van cam » van nam, van cau, van dam
ky dang » ky nang, ky danh
ky sang » ky nang, ky tang, duy sang
tu sac » tu sach, tu cac, tu san

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

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