Perhaps you should try some spelling variations:
cao hoi » cau hoi, co hoi, cao hoc
va cham » va chat, va tham
thue va » thuc va, thuyet va, thuc vat
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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: tu cai ky nang cao hoi. hieu ((ve cam) OR (va cham)) thue va tinh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang cao hoi. hieu ((ve cam) or (va cham)) thue va tinh vi cua tre*.