Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ky » sach y, sach ty, sach kem
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
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.

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