Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
van lam » van nam
thuc va » thuc vat, thuc dan, thuc day
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
so sac » so sach, so dac
sac ky » cac ky, sai ky
luc va » tuc va, loc va
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky dang xa hoi. hieu van lam ((luc va) or (((duc va) or (thuc va)))) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky dang xa hoi. hieu van lam ((luc va) OR (((duc va) OR (thuc va)))) hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: so sac ky dang xa hoi. hieu van lam ((luc va) or (((duc va) or (thuc va)))) hanh di cua tre*.