Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
cua triet » cua viet, su triet, va triet
sang tao » hang tai
lieu van » lieu va, hieu van, sieu van
van tham » van thanh, van tuan, van chat
danh vai » danh sai, danh va, doanh van
te sach » toc sach
sang ma » tang ma, nang ma, mang may
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((sang ma) or (sang tao)) hoi. lieu van tham thuc va danh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((sang ma) OR (sang tao)) hoi. lieu van tham thuc va danh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach y ((sang ma) or (sang tao)) hoi. lieu van tham thuc va danh vai cua triet*.