Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
ve cham » va cham, ve chat, vu cham
hai cua » thai cua, dai cua, hoi cua
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
sac ky » cac ky, sai ky
luc va » duc va, tuc va, loc va
ma hoi » mai hoi, xa hoi, me hoi
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((ma hoi) or (ma hoa)). hieu ve cham ((luc va) or (truc va)) hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((ma hoi) OR (ma hoa)). hieu ve cham ((luc va) OR (truc va)) hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((ma hoi) or (ma hoa)). hieu ve cham ((luc va) or (truc va)) hanh hai cua tre*.