Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cuu tre, cua triet
cam duc » cam xuc, cao duc, pham duc
ky dang » ky nang
hai cua » thai cua, dai cua, hoi cua
ky danh » ky anh
hieu ve » hieu van
hieu va » lieu va, hieu qua
duc van » duc va, duc tan, duc manh
tu sac » tu sach, tu cac, tu san

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 dang) OR (ky danh)) xa hoi. ((hieu ve) or (hieu va)) cam duc van hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky dang) OR (ky danh)) xa hoi. ((hieu ve) OR (hieu va)) cam duc van hanh hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky dang) OR (ky danh)) xa hoi. ((hieu ve) or (hieu va)) cam duc van hanh hai cua tre*".