Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lam » thanh lap, hanh lam, thanh nam
ban thanh » ban hanh, ban hang
lam cua » nam cua, lam chat
dua ban » dia ban, cua ban, qua ban
so sach » so sanh, bo sach, co sach
ky cong » ke cong, ly cong, khu cong
ky dong » ly dong, ky dang, ty dong
va cao » va cac, va co, va dao
ha hoi » hoa hoi, ha noi, xa hoi
ve cao » ve bao, ve cac, ve co

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