Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
cua tre » cua te, cuu tre, cua triet
cau luc » cau truc, cau phuc
cau xuc » cam xuc, cau truc, chat xuc
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
thu san » thuy san, thu ban, phu san
vi cua » vai cua, di cua
tu san » tu ban, tu can, vu san

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (thu san)) ky lang xa hoi. hieu van ((cau xuc) OR (cau luc)) ban thanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) OR (thu san)) ky lang xa hoi. hieu van ((cau xuc) or (cau luc)) ban thanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu san) OR (thu san)) ky lang xa hoi. hieu van ((cau xuc) or (cau luc)) ban thanh vi cua tre*.