Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
sang ky » sang kyo, dang ky, tang ky
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
san ky » van ky, dan ky, ban 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 ((san ky) OR (sang ky)) nang ma hoi. hieu ((ve cam) OR (va cham)) tu va hanh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) or (sang ky)) nang ma hoi. hieu ((ve cam) or (va cham)) tu va hanh vi cua triet*.