Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va triet » va thiet, va trien, ve triet
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
sach ky » sac ky, sach y, sach ty
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
cam tuc » cam xuc, cam tu, dam thuc
ma hoi » mai hoi, xa hoi, ma hoa
dai va » mai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky sang ma hoi. hieu ve ((cam tuc) or (nam thuc)) va thanh dai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky sang ma hoi. hieu ve ((cam tuc) OR (nam thuc)) va thanh dai va triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky sang ma hoi. hieu ve ((cam tuc) or (nam thuc)) va thanh dai va triet*.