Perhaps you should try some spelling variations:
hanh than » hanh han, hanh nhan, hanh phan
than cua » nhan cua, thai cua, ban cua
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
cua tre » cua te, cuu tre, cua triet
ky danh » ky anh
ky dang » ky nang
ky sang » ky nang, ky tang, duy sang
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
tu can » tu ban, tu cac, thu canh

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

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