Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
ve cham » ve chat, vu cham, ve chim
tang ma » mang may, tang van
ma hoi » mai hoi, xa hoi, ma hoa
cam ky » cac ky
thu va » thuc va, thue va, tu va
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 ((cam ky) OR (cao ky)) tang ma hoi. hieu ((ve cham) OR (va cham)) thu va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((cam ky) or (cao ky)) tang ma hoi. hieu ((ve cham) OR (va cham)) thu va hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((cam ky) or (cao ky)) tang ma hoi. hieu ((ve cham) OR (va cham)) thu va hanh vi cua tre*.