Perhaps you should try some spelling variations:
thu san » thuy san, thu ban, phu san
xac hoi » xa hoi, cac thoi, cac khoi
va hanh » van hanh, va thanh, va danh
cac xuc » cac nuoc, chat xuc, cac cuoc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua
ky va » ke va, my va, ky la

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu san ((ky va) OR (ly va)) xac hoi. hieu ve ((cac xuc) or (cam xuc)) va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu san ((ky va) OR (ly va)) xac hoi. hieu ve ((cac xuc) OR (cam xuc)) va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu san ((ky va) OR (ly va)) xac hoi. hieu ve ((cac xuc) or (cam xuc)) va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu san ((ky va) OR (ly va)) xac hoi. hieu ve ((cac xuc) or (cam xuc)) va hanh vi cua tre*.