Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
duc van » duc va, duc tan, duc manh
xuc ban » duc ban, cuc ban, quoc ban
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai 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 sac ky nang xa hoi. hieu van nam ((duc van) or (xuc ban)) hanh vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu van nam ((duc van) OR (xuc ban)) hanh vi ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu van nam ((duc van) or (xuc ban)) hanh vi ((cuu tre) or (cua tre))*.