Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
dang mai » dang hai, dang mau, dang bai
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
tuc va » thuc va, truc va, tuc xa
xuc va » duc va, luc va, xac va
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sac ky) or (sach y)) dang mai hoi. hieu ve cam ((xuc va) or (tuc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (sach y)) dang mai hoi. hieu ve cam ((xuc va) OR (tuc va)) hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) or (sach y)) dang mai hoi. hieu ve cam ((xuc va) or (tuc va)) hanh vai cua tre*.