Perhaps you should try some spelling variations:
dat duoc » dat nuoc, da duoc, luat duoc
hieu ve » hieu va, hieu van
duoc va » nuoc va, duc va, duoc ma
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ma hoi » mai hoi, ma hoa, me hoi
ve dat » de dat, va dat, ve dao
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang ((ma hoi) OR (xa hoi)). hieu ve dat duoc va hanh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang ((ma hoi) OR (xa hoi)). hieu ve dat duoc va hanh di cua tre*".