Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
lam chat » luan chat, cao chat, ly chat
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
lam cua » nam cua
ve cac » vien cac

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 lang xa hoi. hieu ((ve cac) OR (va cac)) duc va thanh ((lam cua) or (lam chat)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky lang xa hoi. hieu ((ve cac) OR (va cac)) duc va thanh ((lam cua) OR (lam chat)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky lang xa hoi. hieu ((ve cac) OR (va cac)) duc va thanh ((lam cua) or (lam chat)) triet".
• Adding a wildcard symbol may retrieve word variants: so sach ky lang xa hoi. hieu ((ve cac) OR (va cac)) duc va thanh ((lam cua) or (lam chat)) triet*.