Perhaps you should try some spelling variations:
tinh doi » trinh doc, trinh do, tinh hoc
cua tre » cua te, cuu tre, cua triet
tinh di » trinh di, tinh da, tin di
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
ky sang » ky dang, ky tang, duy sang
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa
vu sac » vu sach, vu san, va sac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ((ky sang) OR (ky nang)) ma hoi. hieu va cac xuc va ((tinh di) OR (tinh doi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ((ky sang) or (ky nang)) ma hoi. hieu va cac xuc va ((tinh di) OR (tinh doi)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sac ((ky sang) or (ky nang)) ma hoi. hieu va cac xuc va ((tinh di) OR (tinh doi)) cua tre*.