Perhaps you should try some spelling variations:
lam chat » luan chat, cao chat, ly chat
so sach » so sanh, bo sach, co sach
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
duc gia » quoc gia
lam cua » nam cua
ve cac » va 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) OR (ky tang)) xa hoi. hieu ve cac duc gia thanh ((lam cua) or (lam chat)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ky lang) OR (ky tang)) xa hoi. hieu ve cac duc gia thanh ((lam cua) OR (lam chat)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ky lang) OR (ky tang)) xa hoi. hieu ve cac duc gia thanh ((lam cua) or (lam chat)) triet".
• Adding a wildcard symbol may retrieve word variants: so sach ((ky lang) OR (ky tang)) xa hoi. hieu ve cac duc gia thanh ((lam cua) or (lam chat)) triet*.