Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nuoc sach » nguoi sach, cuoc cach, cuon sach
danh dai » danh dau, danh di, danh sai
hoc sach » hoc sinh, hoc cac, hoc anh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va danh » va dinh, va dan, va hanh
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, luc va
va cai » va cac, va bai, va dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (nuoc sach)) ky lang xa hoi. hieu ((va cai) or (va cao)) xuc va danh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (nuoc sach)) ky lang xa hoi. hieu ((va cai) OR (va cao)) xuc va danh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (nuoc sach)) ky lang xa hoi. hieu ((va cai) or (va cao)) xuc va danh dai cua triet*.