Perhaps you should try some spelling variations:
thien van » thi van
van hanh » van thanh, ban hanh, van anh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
va hanh » va thanh, va danh, ban hanh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky lang xa hoi. ((hieu ve) or (thien van)) cam xuc ((va hanh) OR (van hanh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky lang xa hoi. ((hieu ve) OR (thien van)) cam xuc ((va hanh) OR (van hanh)) hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky lang xa hoi. ((hieu ve) or (thien van)) cam xuc ((va hanh) OR (van hanh)) hai cua tre*".