Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
van chao » van chat, van hao, van cho
hieu van » hieu va, thien van, lieu va
thu sach » thuat sach, thuoc sach, thu hoach
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
tu sach » su sach, te sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ky sang ma hoa. hieu van chao xu ((va hanh) or (ban hanh)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky sang ma hoa. hieu van chao xu ((va hanh) OR (ban hanh)) vai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky sang ma hoa. hieu van chao xu ((va hanh) or (ban hanh)) vai cua triet*.