Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh tai » thanh tai, hang tai, han tai
thi hanh » thi thanh
tai cua » thai cua, tai cuc, tri cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, tu cach
hanh xa » hanh va, hanh ma, hanh xu
te sach » toc sach
va nam » van nam, ha nam, va nay
te nam » tu nam, he nam, tw nam

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 (te sach)) thi hanh xa hoi. hieu ((te nam) or (va nam)) thuc va hanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) thi hanh xa hoi. hieu ((te nam) OR (va nam)) thuc va hanh tai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) thi hanh xa hoi. hieu ((te nam) or (va nam)) thuc va hanh tai cua triet*.