Perhaps you should try some spelling variations:
nang mai » nang ma, lang mai, nang cai
dinh doi » dinh moi, tinh doi, dinh toi
nang tai » hang tai, tang tai, sang tai
cua tre » cua te, cuu tre, cua triet
doi cua » dai cua, hoi cua
va dinh » van dinh, va kinh, va tinh
ve cac » va cac, vien cac
va sac » va cac, va suc, va san
sac ky » cac ky, sai ky
ve cam » ve cham, va cam, ve cai

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: va sac ky ((nang mai) OR (nang tai)) hoi. hieu ((ve cam) OR (ve cac)) duc va dinh doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "va sac ky ((nang mai) OR (nang tai)) hoi. hieu ((ve cam) or (ve cac)) duc va dinh doi cua tre~".
• Adding a wildcard symbol may retrieve word variants: va sac ky ((nang mai) OR (nang tai)) hoi. hieu ((ve cam) or (ve cac)) duc va dinh doi cua tre*.