Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet
ban ky » van ky
dan ky » van ky
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

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