Perhaps you should try some spelling variations:
hanh than » hanh nhan, hanh phan, nhanh thanh
hanh han » hanh nhan, hanh phan, hanh san
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va
ky dang » ky nang, ky danh
sai ky » sac ky
su sai » su tai, su hai, su dai

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

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