Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
van cam » van nam, van lam, van cau
va hanh » va thanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di 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 sanh) or (do sanh)) ky tang ma hoi. hieu van cam xuc ((va hanh) or (van hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (do sanh)) ky tang ma hoi. hieu van cam xuc ((va hanh) OR (van hanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((so sanh) or (do sanh)) ky tang ma hoi. hieu van cam xuc ((va hanh) or (van hanh)) vi cua tre*.