Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
hai cua » thai cua, dai cua, hoi cua
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
sac ky » cac ky

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

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