Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, va danh
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va
xay hoi » xa hoi, tay hoi, cay phoi
ky danh » ky anh
ky dang » ky nang
vi cuu » vi luu, vinh cuu
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)) xay hoi. ((hieu ve) or (hieu van)) cam duc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky dang) OR (ky danh)) xay hoi. ((hieu ve) OR (hieu van)) cam duc va hanh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky dang) OR (ky danh)) xay hoi. ((hieu ve) or (hieu van)) cam duc va hanh vi cuu tre*".